From 0e56db632ad18d169a2e935b5e9aaa97f9c3b71b Mon Sep 17 00:00:00 2001
From: Kenneth Reitz <me@kennethreitz.com>
Date: Wed, 23 Mar 2011 01:47:01 -0400
Subject: [PATCH] xlwt3 package

---
 tablib/packages/xlwt3/BIFFRecords.py        | 2392 ++++++++++++++++
 tablib/packages/xlwt3/Bitmap.py             |  258 ++
 tablib/packages/xlwt3/Cell.py               |  233 ++
 tablib/packages/xlwt3/Column.py             |   34 +
 tablib/packages/xlwt3/CompoundDoc.py        |  516 ++++
 tablib/packages/xlwt3/ExcelFormula.py       |   41 +
 tablib/packages/xlwt3/ExcelFormulaLexer.py  |  126 +
 tablib/packages/xlwt3/ExcelFormulaParser.py |  659 +++++
 tablib/packages/xlwt3/ExcelMagic.py         |  859 ++++++
 tablib/packages/xlwt3/Formatting.py         |  261 ++
 tablib/packages/xlwt3/Row.py                |  253 ++
 tablib/packages/xlwt3/Style.py              |  593 ++++
 tablib/packages/xlwt3/UnicodeUtils.py       |   79 +
 tablib/packages/xlwt3/Utils.py              |  196 ++
 tablib/packages/xlwt3/Workbook.py           |  635 ++++
 tablib/packages/xlwt3/Worksheet.py          | 1296 +++++++++
 tablib/packages/xlwt3/__init__.py           |    9 +
 tablib/packages/xlwt3/antlr.py              | 2868 +++++++++++++++++++
 18 files changed, 11308 insertions(+)
 create mode 100644 tablib/packages/xlwt3/BIFFRecords.py
 create mode 100644 tablib/packages/xlwt3/Bitmap.py
 create mode 100644 tablib/packages/xlwt3/Cell.py
 create mode 100644 tablib/packages/xlwt3/Column.py
 create mode 100644 tablib/packages/xlwt3/CompoundDoc.py
 create mode 100644 tablib/packages/xlwt3/ExcelFormula.py
 create mode 100644 tablib/packages/xlwt3/ExcelFormulaLexer.py
 create mode 100644 tablib/packages/xlwt3/ExcelFormulaParser.py
 create mode 100644 tablib/packages/xlwt3/ExcelMagic.py
 create mode 100644 tablib/packages/xlwt3/Formatting.py
 create mode 100644 tablib/packages/xlwt3/Row.py
 create mode 100644 tablib/packages/xlwt3/Style.py
 create mode 100644 tablib/packages/xlwt3/UnicodeUtils.py
 create mode 100644 tablib/packages/xlwt3/Utils.py
 create mode 100644 tablib/packages/xlwt3/Workbook.py
 create mode 100644 tablib/packages/xlwt3/Worksheet.py
 create mode 100644 tablib/packages/xlwt3/__init__.py
 create mode 100644 tablib/packages/xlwt3/antlr.py

diff --git a/tablib/packages/xlwt3/BIFFRecords.py b/tablib/packages/xlwt3/BIFFRecords.py
new file mode 100644
index 0000000..79be326
--- /dev/null
+++ b/tablib/packages/xlwt3/BIFFRecords.py
@@ -0,0 +1,2392 @@
+from struct import pack
+from .UnicodeUtils import upack1, upack2
+import sys
+
+class SharedStringTable(object):
+    _SST_ID = 0x00FC
+    _CONTINUE_ID = 0x003C
+
+    def __init__(self, encoding):
+        self.encoding = encoding
+        self._str_indexes = {}
+        self._tally = []
+        self._add_calls = 0
+        # Following 3 attrs are used for temporary storage in the
+        # get_biff_record() method and methods called by it. The pseudo-
+        # initialisation here is for documentation purposes only.
+        self._sst_record = None
+        self._continues = None
+        self._current_piece = None
+
+    def add_str(self, s):
+        if self.encoding != 'ascii' and not isinstance(s, str):
+            s = str(s, self.encoding)
+        self._add_calls += 1
+        if s not in self._str_indexes:
+            idx = len(self._str_indexes)
+            self._str_indexes[s] = idx
+            self._tally.append(1)
+        else:
+            idx = self._str_indexes[s]
+            self._tally[idx] += 1
+        return idx
+
+    def del_str(self, idx):
+        # This is called when we are replacing the contents of a string cell.
+        assert self._tally[idx] > 0
+        self._tally[idx] -= 1
+        self._add_calls -= 1
+
+    def str_index(self, s):
+        return self._str_indexes[s]
+
+    def get_biff_record(self):
+        self._sst_record = b''
+        self._continues = [None, None]
+        self._current_piece = pack('<II', 0, 0)
+        data = [(idx, s) for s, idx in self._str_indexes.items()]
+        data.sort() # in index order
+        for idx, s in data:
+            if self._tally[idx] == 0:
+                s = b''
+            self._add_to_sst(s)
+        del data
+        self._new_piece()
+        self._continues[0] = pack('<2HII', self._SST_ID, len(self._sst_record), self._add_calls, len(self._str_indexes))
+        self._continues[1] = self._sst_record[8:]
+        self._sst_record = None
+        self._current_piece = None
+        result = b''.join(self._continues)
+        self._continues = None
+        return result
+
+
+    def _add_to_sst(self, s):
+        u_str = upack2(s, self.encoding)
+        # (to_py3): added b'...'
+        is_unicode_str = u_str[2] == b'\x01'
+        if is_unicode_str:
+            atom_len = 5 # 2 byte -- len,
+                         # 1 byte -- options,
+                         # 2 byte -- 1st sym
+        else:
+            atom_len = 4 # 2 byte -- len,
+                         # 1 byte -- options,
+                         # 1 byte -- 1st sym
+
+        self._save_atom(u_str[0:atom_len])
+        self._save_splitted(u_str[atom_len:], is_unicode_str)
+
+    def _new_piece(self):
+        if self._sst_record == b'':
+            self._sst_record = self._current_piece
+        else:
+            curr_piece_len = len(self._current_piece)
+            self._continues.append(pack('<2H%ds'%curr_piece_len, self._CONTINUE_ID, curr_piece_len, self._current_piece))
+        self._current_piece = b''
+
+    def _save_atom(self, s):
+        atom_len = len(s)
+        free_space = 0x2020 - len(self._current_piece)
+        if free_space < atom_len:
+            self._new_piece()
+        self._current_piece += s
+
+    def _save_splitted(self, s, is_unicode_str):
+        i = 0
+        str_len = len(s)
+        while i < str_len:
+            piece_len = len(self._current_piece)
+            free_space = 0x2020 - piece_len
+            tail_len = str_len - i
+            need_more_space = free_space < tail_len
+
+            if not need_more_space:
+                atom_len = tail_len
+            else:
+                if is_unicode_str:
+                    atom_len = free_space & 0xFFFE
+                else:
+                    atom_len = free_space
+
+            self._current_piece += s[i:i+atom_len]
+
+            if need_more_space:
+                self._new_piece()
+                if is_unicode_str:
+                    self._current_piece += b'\x01' # (to_py3): added b'...'
+                else:
+                    self._current_piece += b'\x00' # (to_py3): added b'...'
+
+            i += atom_len
+
+
+class BiffRecord(object):
+
+    _rec_data = b'' # class attribute; child classes need to set this.
+
+    # Sheer waste.
+    # def __init__(self):
+    #     self._rec_data = ''
+
+    def get_rec_id(self):
+        return _REC_ID
+
+    def get_rec_header(self):
+        return pack('<2H', self._REC_ID, len(self._rec_data))
+
+    # Not over-ridden by any child classes, never called (except by "get"; see below).
+    # def get_rec_data(self):
+    #     return self._rec_data
+
+    def get(self):
+        # data = self.get_rec_data()
+        data = self._rec_data
+
+        if len(data) > 0x2020: # limit for BIFF7/8
+            chunks = []
+            pos = 0
+            while pos < len(data):
+                chunk_pos = pos + 0x2020
+                chunk = data[pos:chunk_pos]
+                chunks.append(chunk)
+                pos = chunk_pos
+            continues = pack('<2H', self._REC_ID, len(chunks[0])) + chunks[0]
+            for chunk in chunks[1:]:
+                continues += pack('<2H%ds'%len(chunk), 0x003C, len(chunk), chunk)
+                # 0x003C -- CONTINUE record id
+            return continues
+        else:
+            return self.get_rec_header() + data
+
+
+class Biff8BOFRecord(BiffRecord):
+    """
+    Offset Size Contents
+    0      2    Version, contains 0600H for BIFF8 and BIFF8X
+    2      2    Type of the following data:
+                  0005H = Workbook globals
+                  0006H = Visual Basic module
+                  0010H = Worksheet
+                  0020H = Chart
+                  0040H = Macro sheet
+                  0100H = Workspace file
+    4      2    Build identifier
+    6      2    Build year
+    8      4    File history flags
+    12     4    Lowest Excel version that can read all records in this file
+    """
+    _REC_ID      = 0x0809
+    # stream types
+    BOOK_GLOBAL = 0x0005
+    VB_MODULE   = 0x0006
+    WORKSHEET   = 0x0010
+    CHART       = 0x0020
+    MACROSHEET  = 0x0040
+    WORKSPACE   = 0x0100
+
+    def __init__(self, rec_type):
+        version  = 0x0600
+        build    = 0x0DBB
+        year     = 0x07CC
+        file_hist_flags = 0x00
+        ver_can_read    = 0x06
+
+        self._rec_data = pack('<4H2I', version, rec_type, build, year, file_hist_flags, ver_can_read)
+
+
+class InteraceHdrRecord(BiffRecord):
+    _REC_ID = 0x00E1
+
+    def __init__(self):
+        self._rec_data = pack('BB', 0xB0, 0x04)
+
+
+class InteraceEndRecord(BiffRecord):
+    _REC_ID = 0x00E2
+
+    def __init__(self):
+        self._rec_data = b''
+
+
+class MMSRecord(BiffRecord):
+    _REC_ID = 0x00C1
+
+    def __init__(self):
+        self._rec_data = pack('<H', 0x00)
+
+
+class WriteAccessRecord(BiffRecord):
+    """
+    This record is part of the file protection. It contains the name of the
+    user  that  has  saved  the  file. The user name is always stored as an
+    equal-sized  string.  All  unused  characters after the name are filled
+    with space characters. It is not required to write the mentioned string
+    length. Every other length will be accepted too.
+    """
+    _REC_ID = 0x005C
+
+    def __init__(self, owner):
+        uowner = owner[0:0x30]
+        uowner_len = len(uowner)
+        self._rec_data = pack('%ds%ds' % (uowner_len, 0x70 - uowner_len),
+                              uowner, b' '*(0x70 - uowner_len)) # (to_py3): added b'...'
+
+
+class DSFRecord(BiffRecord):
+    """
+    This  record  specifies  if the file contains an additional BIFF5/BIFF7
+    workbook stream.
+    Record DSF, BIFF8:
+    Offset Size Contents
+    0        2     0 = Only the BIFF8 Workbook stream is present
+                   1 = Additional BIFF5/BIFF7 Book stream is in the file
+    A  double  stream file can be read by Excel 5.0 and Excel 95, and still
+    contains  all  new  features  added to BIFF8 (which are left out in the
+    BIFF5/BIFF7 Book stream).
+    """
+    _REC_ID = 0x0161
+
+    def __init__(self):
+        self._rec_data = pack('<H', 0x00)
+
+
+class TabIDRecord(BiffRecord):
+    _REC_ID = 0x013D
+
+    def __init__(self, sheetcount):
+        for i in range(sheetcount):
+            self._rec_data += pack('<H', i+1)
+
+
+class FnGroupCountRecord(BiffRecord):
+    _REC_ID = 0x009C
+
+    def __init__(self):
+        self._rec_data = pack('BB', 0x0E, 0x00)
+
+
+class WindowProtectRecord(BiffRecord):
+    """
+    This record is part of the worksheet/workbook protection. It determines
+    whether  the window configuration of this document is protected. Window
+    protection is not active, if this record is omitted.
+    """
+    _REC_ID = 0x0019
+
+    def __init__(self, wndprotect):
+        self._rec_data = pack('<H', wndprotect)
+
+
+class ObjectProtectRecord(BiffRecord):
+    """
+    This record is part of the worksheet/workbook protection.
+    It determines whether the objects of the current sheet are protected.
+    Object protection is not active, if this record is omitted.
+    """
+    _REC_ID = 0x0063
+
+
+    def __init__(self, objprotect):
+        self._rec_data = pack('<H', objprotect)
+
+
+class ScenProtectRecord(BiffRecord):
+    """
+    This record is part of the worksheet/workbook protection. It
+    determines whether the scenarios of the current sheet are protected.
+    Scenario protection is not active, if this record is omitted.
+    """
+    _REC_ID = 0x00DD
+
+
+    def __init__(self, scenprotect):
+        self._rec_data = pack('<H', scenprotect)
+
+
+class ProtectRecord(BiffRecord):
+    """
+    This  record is part of the worksheet/workbook protection. It specifies
+    whether  a  worksheet  or a workbook is protected against modification.
+    Protection is not active, if this record is omitted.
+    """
+
+    _REC_ID = 0x0012
+
+    def __init__(self, protect):
+        self._rec_data = pack('<H', protect)
+
+
+class PasswordRecord(BiffRecord):
+    """
+    This record is part of the worksheet/workbook protection. It
+    stores a 16-bit hash value, calculated from the worksheet or workbook
+    protection password.
+    """
+    _REC_ID = 0x0013
+    def passwd_hash(self, plaintext):
+        """
+        Based on the algorithm provided by Daniel Rentz of OpenOffice.
+        """
+        if plaintext == b"":
+            return 0
+
+        passwd_hash = 0x0000
+        for i, char in enumerate(plaintext):
+            c = ord(char) << (i + 1)
+            low_15 = c & 0x7fff
+            high_15 = c & 0x7fff << 15
+            high_15 = high_15 >> 15
+            c = low_15 | high_15
+            passwd_hash ^= c
+        passwd_hash ^= len(plaintext)
+        passwd_hash ^= 0xCE4B
+        return passwd_hash
+
+    def __init__(self, passwd = b""):
+        self._rec_data = pack('<H', self.passwd_hash(passwd))
+
+
+class Prot4RevRecord(BiffRecord):
+    _REC_ID = 0x01AF
+
+    def __init__(self):
+        self._rec_data = pack('<H', 0x00)
+
+
+class Prot4RevPassRecord(BiffRecord):
+    _REC_ID = 0x01BC
+
+    def __init__(self):
+        self._rec_data = pack('<H', 0x00)
+
+
+class BackupRecord(BiffRecord):
+    """
+    This  record  contains  a Boolean value determining whether Excel makes
+    a backup of the file while saving.
+    """
+    _REC_ID = 0x0040
+
+    def __init__(self, backup):
+        self._rec_data = pack('<H', backup)
+
+class HideObjRecord(BiffRecord):
+    """
+    This record specifies whether and how to show objects in the workbook.
+
+    Record HIDEOBJ, BIFF3-BIFF8:
+    Offset  Size    Contents
+    0       2       Viewing mode for objects:
+                        0 = Show all objects
+                        1 = Show placeholders
+                        2 = Do not show objects
+    """
+    _REC_ID = 0x008D
+
+    def __init__(self):
+        self._rec_data = pack('<H', 0x00)
+
+
+
+class RefreshAllRecord(BiffRecord):
+    """
+    """
+
+    _REC_ID = 0x01B7
+
+    def __init__(self):
+        self._rec_data = pack('<H', 0x00)
+
+
+class BookBoolRecord(BiffRecord):
+    """
+    This record contains a Boolean value determining whether to save values
+    linked  from external workbooks (CRN records and XCT records). In BIFF3
+    and BIFF4 this option is stored in the WSBOOL record.
+
+    Record BOOKBOOL, BIFF5-BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = Save external linked values;
+                    1 = Do not save external linked values
+    """
+
+    _REC_ID = 0x00DA
+
+    def __init__(self):
+        self._rec_data = pack('<H', 0x00)
+
+
+class CountryRecord(BiffRecord):
+    """
+    This   record   stores  two  Windows  country  identifiers.  The  first
+    represents  the  user  interface language of the Excel version that has
+    saved  the file, and the second represents the system regional settings
+    at the time the file was saved.
+
+    Record COUNTRY, BIFF3-BIFF8:
+
+    Offset  Size    Contents
+    0       2       Windows country identifier of the user interface language of Excel
+    2       2       Windows country identifier of the system regional settings
+
+    The  following  table  shows most of the used country identifiers. Most
+    of  these  identifiers  are  equal to the international country calling
+    codes.
+
+    1   USA
+    2   Canada
+    7   Russia
+    """
+
+    _REC_ID = 0x008C
+
+    def __init__(self, ui_id, sys_settings_id):
+        self._rec_data = pack('<2H', ui_id, sys_settings_id)
+
+
+class UseSelfsRecord(BiffRecord):
+    """
+    This  record  specifies if the formulas in the workbook can use natural
+    language  formulas.  This  type  of  formula can refer to cells by its
+    content or the content of the column or row header cell.
+
+    Record USESELFS, BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = Do not use natural language formulas
+                    1 = Use natural language formulas
+
+    """
+
+    _REC_ID = 0x0160
+
+    def __init__(self):
+        self._rec_data = pack('<H', 0x01)
+
+
+class EOFRecord(BiffRecord):
+    _REC_ID = 0x000A
+
+    def __init__(self):
+        self._rec_data = b''
+
+
+class DateModeRecord(BiffRecord):
+    """
+    This  record  specifies  the  base date for displaying date values. All
+    dates  are  stored as count of days past this base date. In BIFF2-BIFF4
+    this   record  is  part  of  the  Calculation  Settings  Block.
+    In BIFF5-BIFF8 it is stored in the Workbook Globals Substream.
+
+    Record DATEMODE, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = Base is 1899-Dec-31 (the cell = 1 represents 1900-Jan-01)
+                    1 = Base is 1904-Jan-01 (the cell = 1 represents 1904-Jan-02)
+    """
+    _REC_ID = 0x0022
+
+    def __init__(self, from1904):
+        if from1904:
+            self._rec_data = pack('<H', 1)
+        else:
+            self._rec_data = pack('<H', 0)
+
+
+class PrecisionRecord(BiffRecord):
+    """
+    This record stores if formulas use the real cell values for calculation
+    or  the  values  displayed  on  the screen. In BIFF2- BIFF4 this record
+    is  part of the Calculation Settings Block. In BIFF5-BIFF8 it is stored
+    in the Workbook Globals Substream.
+
+    Record PRECISION, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = Use displayed values;
+                    1 = Use real cell values
+    """
+    _REC_ID = 0x000E
+
+    def __init__(self, use_real_values):
+        if use_real_values:
+            self._rec_data = pack('<H', 1)
+        else:
+            self._rec_data = pack('<H', 0)
+
+
+class CodepageBiff8Record(BiffRecord):
+    """
+    This record stores the text encoding used to write byte strings, stored
+    as MS Windows code page identifier. The CODEPAGE record in BIFF8 always
+    contains  the  code  page  1200  (UTF-16).  Therefore  it is not
+    possible  to  obtain the encoding used for a protection password (it is
+    not UTF-16).
+
+    Record CODEPAGE, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       2       Code page identifier used for byte string text encoding:
+                      016FH = 367 = ASCII
+                      01B5H = 437 = IBM PC CP-437 (US)
+                      02D0H = 720 = IBM PC CP-720 (OEM Arabic)
+                      02E1H = 737 = IBM PC CP-737 (Greek)
+                      0307H = 775 = IBM PC CP-775 (Baltic)
+                      0352H = 850 = IBM PC CP-850 (Latin I)
+                      0354H = 852 = IBM PC CP-852 (Latin II (Central European))
+                      0357H = 855 = IBM PC CP-855 (Cyrillic)
+                      0359H = 857 = IBM PC CP-857 (Turkish)
+                      035AH = 858 = IBM PC CP-858 (Multilingual Latin I with Euro)
+                      035CH = 860 = IBM PC CP-860 (Portuguese)
+                      035DH = 861 = IBM PC CP-861 (Icelandic)
+                      035EH = 862 = IBM PC CP-862 (Hebrew)
+                      035FH = 863 = IBM PC CP-863 (Canadian (French))
+                      0360H = 864 = IBM PC CP-864 (Arabic)
+                      0361H = 865 = IBM PC CP-865 (Nordic)
+                      0362H = 866 = IBM PC CP-866 (Cyrillic (Russian))
+                      0365H = 869 = IBM PC CP-869 (Greek (Modern))
+                      036AH = 874 = Windows CP-874 (Thai)
+                      03A4H = 932 = Windows CP-932 (Japanese Shift-JIS)
+                      03A8H = 936 = Windows CP-936 (Chinese Simplified GBK)
+                      03B5H = 949 = Windows CP-949 (Korean (Wansung))
+                      03B6H = 950 = Windows CP-950 (Chinese Traditional BIG5)
+                      04B0H = 1200 = UTF-16 (BIFF8)
+                      04E2H = 1250 = Windows CP-1250 (Latin II) (Central European)
+                      04E3H = 1251 = Windows CP-1251 (Cyrillic)
+                      04E4H = 1252 = Windows CP-1252 (Latin I) (BIFF4-BIFF7)
+                      04E5H = 1253 = Windows CP-1253 (Greek)
+                      04E6H = 1254 = Windows CP-1254 (Turkish)
+                      04E7H = 1255 = Windows CP-1255 (Hebrew)
+                      04E8H = 1256 = Windows CP-1256 (Arabic)
+                      04E9H = 1257 = Windows CP-1257 (Baltic)
+                      04EAH = 1258 = Windows CP-1258 (Vietnamese)
+                      0551H = 1361 = Windows CP-1361 (Korean (Johab))
+                      2710H = 10000 = Apple Roman
+                      8000H = 32768 = Apple Roman
+                      8001H = 32769 = Windows CP-1252 (Latin I) (BIFF2-BIFF3)
+    """
+    _REC_ID = 0x0042
+    UTF_16 = 0x04B0
+
+    def __init__(self):
+        self._rec_data = pack('<H', self.UTF_16)
+
+class Window1Record(BiffRecord):
+    """
+    Offset Size Contents
+    0      2    Horizontal position of the document window (in twips = 1/20 of a point)
+    2      2    Vertical position of the document window (in twips = 1/20 of a point)
+    4      2    Width of the document window (in twips = 1/20 of a point)
+    6      2    Height of the document window (in twips = 1/20 of a point)
+    8      2    Option flags:
+                  Bits  Mask  Contents
+                  0     0001H 0 = Window is visible 1 = Window is hidden
+                  1     0002H 0 = Window is open 1 = Window is minimised
+                  3     0008H 0 = Horizontal scroll bar hidden 1 = Horizontal scroll bar visible
+                  4     0010H 0 = Vertical scroll bar hidden 1 = Vertical scroll bar visible
+                  5     0020H 0 = Worksheet tab bar hidden 1 = Worksheet tab bar visible
+    10     2    Index to active (displayed) worksheet
+    12     2    Index of first visible tab in the worksheet tab bar
+    14     2    Number of selected worksheets (highlighted in the worksheet tab bar)
+    16     2    Width of worksheet tab bar (in 1/1000 of window width). The remaining space is used by the
+                horizontal scrollbar.
+    """
+    _REC_ID = 0x003D
+    # flags
+
+    def __init__(self,
+                 hpos_twips, vpos_twips,
+                 width_twips, height_twips,
+                 flags,
+                 active_sheet,
+                 first_tab_index, selected_tabs, tab_width):
+        self._rec_data = pack('<9H', hpos_twips, vpos_twips,
+                                      width_twips, height_twips,
+                                      flags,
+                                      active_sheet,
+                                      first_tab_index, selected_tabs, tab_width)
+
+class FontRecord(BiffRecord):
+    """
+    WARNING
+        The font with index 4 is omitted in all BIFF versions.
+        This means the first four fonts have zero-based indexes, and
+        the fifth font and all following fonts are referenced with one-based
+        indexes.
+
+    Offset Size Contents
+    0      2    Height of the font (in twips = 1/20 of a point)
+    2      2    Option flags:
+                  Bit Mask    Contents
+                  0   0001H   1 = Characters are bold (redundant, see below)
+                  1   0002H   1 = Characters are italic
+                  2   0004H   1 = Characters are underlined (redundant, see below)
+                  3   0008H   1 = Characters are struck out
+                        0010H 1 = Outline
+                        0020H  1 = Shadow
+    4     2     Colour index
+    6     2     Font weight (100-1000).
+                Standard values are 0190H (400) for normal text and 02BCH
+                (700) for bold text.
+    8     2     Escapement type:
+                  0000H = None
+                  0001H = Superscript
+                  0002H = Subscript
+    10    1     Underline type:
+                  00H = None
+                  01H = Single
+                  21H = Single accounting
+                  02H = Double
+                  22H = Double accounting
+    11    1     Font family:
+                  00H = None (unknown or don't care)
+                  01H = Roman (variable width, serifed)
+                  02H = Swiss (variable width, sans-serifed)
+                  03H = Modern (fixed width, serifed or sans-serifed)
+                  04H = Script (cursive)
+                  05H = Decorative (specialised, i.e. Old English, Fraktur)
+    12    1     Character set:
+                  00H = 0 = ANSI Latin
+                  01H = 1 = System default
+                  02H = 2 = Symbol
+                  4DH = 77 = Apple Roman
+                  80H = 128 = ANSI Japanese Shift-JIS
+                  81H = 129 = ANSI Korean (Hangul)
+                  82H = 130 = ANSI Korean (Johab)
+                  86H = 134 = ANSI Chinese Simplified GBK
+                  88H = 136 = ANSI Chinese Traditional BIG5
+                  A1H = 161 = ANSI Greek
+                  A2H = 162 = ANSI Turkish
+                  A3H = 163 = ANSI Vietnamese
+                  B1H = 177 = ANSI Hebrew
+                  B2H = 178 = ANSI Arabic
+                  BAH = 186 = ANSI Baltic
+                  CCH = 204 = ANSI Cyrillic
+                  DEH = 222 = ANSI Thai
+                  EEH = 238 = ANSI Latin II (Central European)
+                  FFH = 255 = OEM Latin I
+    13    1     Not used
+    14    var.  Font name:
+                  BIFF5/BIFF7: Byte string, 8-bit string length
+                  BIFF8: Unicode string, 8-bit string length
+    The boldness and underline flags are still set in the options field,
+    but not used on reading the font. Font weight and underline type
+    are specified in separate fields instead.
+    """
+    _REC_ID = 0x0031
+
+    def __init__(self,
+                    height, options, colour_index, weight, escapement,
+                    underline, family, charset,
+                    name):
+        uname = upack1(name)
+        uname_len = len(uname)
+
+        self._rec_data = pack('<5H4B%ds' % uname_len, height, options, colour_index, weight, escapement,
+                                                underline, family, charset, 0x00,
+                                                uname)
+
+class NumberFormatRecord(BiffRecord):
+    """
+    Record FORMAT, BIFF8:
+    Offset  Size    Contents
+    0       2       Format index used in other records
+    2       var.    Number format string (Unicode string, 16-bit string length)
+
+    From  BIFF5  on,  the built-in number formats will be omitted. The built-in
+    formats  are  dependent  on  the current regional settings of the operating
+    system.  The following table shows which number formats are used by default
+    in  a  US-English  environment.  All indexes from 0 to 163 are reserved for
+    built-in formats. The first user-defined format starts at 164.
+
+    The built-in number formats, BIFF5-BIFF8
+
+    Index   Type        Format string
+    0       General     General
+    1       Decimal     0
+    2       Decimal     0.00
+    3       Decimal     #,##0
+    4       Decimal     #,##0.00
+    5       Currency    "$"#,##0_);("$"#,##
+    6       Currency    "$"#,##0_);[Red]("$"#,##
+    7       Currency    "$"#,##0.00_);("$"#,##
+    8       Currency    "$"#,##0.00_);[Red]("$"#,##
+    9       Percent     0%
+    10      Percent     0.00%
+    11      Scientific  0.00E+00
+    12      Fraction    # ?/?
+    13      Fraction    # ??/??
+    14      Date        M/D/YY
+    15      Date        D-MMM-YY
+    16      Date        D-MMM
+    17      Date        MMM-YY
+    18      Time        h:mm AM/PM
+    19      Time        h:mm:ss AM/PM
+    20      Time        h:mm
+    21      Time        h:mm:ss
+    22      Date/Time   M/D/YY h:mm
+    37      Account     _(#,##0_);(#,##0)
+    38      Account     _(#,##0_);[Red](#,##0)
+    39      Account     _(#,##0.00_);(#,##0.00)
+    40      Account     _(#,##0.00_);[Red](#,##0.00)
+    41      Currency    _("$"* #,##0_);_("$"* (#,##0);_("$"* "-"_);_(@_)
+    42      Currency    _(* #,##0_);_(* (#,##0);_(* "-"_);_(@_)
+    43      Currency    _("$"* #,##0.00_);_("$"* (#,##0.00);_("$"* "-"??_);_(@_)
+    44      Currency    _(* #,##0.00_);_(* (#,##0.00);_(* "-"??_);_(@_)
+    45      Time        mm:ss
+    46      Time        [h]:mm:ss
+    47      Time        mm:ss.0
+    48      Scientific  ##0.0E+0
+    49      Text        @
+    """
+    _REC_ID = 0x041E
+
+    def __init__(self, idx, fmtstr):
+        ufmtstr = upack2(fmtstr)
+        ufmtstr_len = len(ufmtstr)
+
+        self._rec_data = pack('<H%ds' % ufmtstr_len, idx, ufmtstr)
+
+
+class XFRecord(BiffRecord):
+    """
+    XF Substructures
+    -------------------------------------------------------------------------
+    XF_TYPE_PROT  XF Type and Cell Protection (3 Bits), BIFF3-BIFF8
+    These 3 bits are part of a specific data byte.
+    Bit Mask    Contents
+    0   01H     1 = Cell is locked
+    1   02H     1 = Formula is hidden
+    2   04H     0 = Cell XF; 1 = Style XF
+
+    XF_USED_ATTRIB   Attributes   Used  from  Parent  Style  XF  (6  Bits),
+    BIFF3-BIFF8  Each  bit  describes  the  validity  of  a  specific group
+    of  attributes.  In  cell XFs a cleared bit means the attributes of the
+    parent  style XF are used (but only if the attributes are valid there),
+    a  set  bit  means  the  attributes  of  this XF are used. In style XFs
+    a cleared bit means the attribute setting is valid, a set bit means the
+    attribute should be ignored.
+    Bit Mask    Contents
+    0   01H     Flag for number format
+    1   02H     Flag for font
+    2   04H     Flag for horizontal and vertical alignment, text wrap, indentation, orientation, rotation, and
+                text direction
+    3   08H     Flag for border lines
+    4   10H     Flag for background area style
+    5   20H     Flag for cell protection (cell locked and formula hidden)
+
+    XF_HOR_ALIGN  Horizontal Alignment (3 Bits), BIFF2-BIFF8 The horizontal
+    alignment consists of 3 bits and is part of a specific data byte.
+    Value   Horizontal alignment
+    00H     General
+    01H     Left
+    02H     Centred
+    03H     Right
+    04H     Filled
+    05H     Justified (BIFF4-BIFF8X)
+    06H     Centred across selection (BIFF4-BIFF8X)
+    07H     Distributed (BIFF8X)
+
+    XF_VERT_ALIGN Vertical Alignment (2 or 3 Bits), BIFF4-BIFF8
+    The vertical alignment consists of 2 bits (BIFF4) or 3 bits (BIFF5-BIFF8)
+    and is part of a specific data byte. Vertical alignment is not available
+    in BIFF2 and BIFF3.
+    Value   Vertical alignment
+    00H     Top
+    01H     Centred
+    02H     Bottom
+    03H     Justified (BIFF5-BIFF8X)
+    04H     Distributed (BIFF8X)
+
+    XF_ORIENTATION  Text  Orientation  (2  Bits),  BIFF4-BIFF7  In the BIFF
+    versions  BIFF4-BIFF7,  text  can  be  rotated  in  steps of 90 degrees
+    or  stacked.  The  orientation  mode  consists of 2 bits and is part of
+    a specific data byte. In BIFF8 a rotation angle occurs instead of these
+    flags.
+    Value   Text orientation
+    00H     Not rotated
+    01H     Letters are stacked top-to-bottom, but not rotated
+    02H     Text is rotated 90 degrees counterclockwise
+    03H     Text is rotated 90 degrees clockwise
+
+    XF_ROTATION Text Rotation Angle (1 Byte), BIFF8
+    Value   Text rotation
+    0       Not rotated
+    1-90    1 to 90 degrees counterclockwise
+    91-180  1 to 90 degrees clockwise
+    255     Letters are stacked top-to-bottom, but not rotated
+
+    XF_BORDER_34  Cell  Border  Style  (4  Bytes), BIFF3-BIFF4 Cell borders
+    contain a line style and a line colour for each line of the border.
+    Bit     Mask        Contents
+    2-0     00000007H   Top line style
+    7-3     000000F8H   Colour index for top line colour
+    10-8    00000700H   Left line style
+    15-11   0000F800H   Colour index for left line colour
+    18-16   00070000H   Bottom line style
+    23-19   00F80000H   Colour index for bottom line colour
+    26-24   07000000H   Right line style
+    31-27   F8000000H   Colour index for right line colour
+
+    XF_AREA_34  Cell  Background  Area  Style (2 Bytes), BIFF3-BIFF4 A cell
+    background  area  style  contains  an area pattern and a foreground and
+    background colour.
+    Bit     Mask    Contents
+    5-0     003FH   Fill pattern
+    10-6    07C0H   Colour index for pattern colour
+    15-11   F800H   Colour index for pattern background
+ ---------------------------------------------------------------------------------------------
+    Record XF, BIFF8:
+    Offset      Size    Contents
+    0           2       Index to FONT record
+    2           2       Index to FORMAT record
+    4           2       Bit     Mask    Contents
+                        2-0     0007H   XF_TYPE_PROT . XF type, cell protection (see above)
+                        15-4    FFF0H   Index to parent style XF (always FFFH in style XFs)
+    6           1       Bit     Mask    Contents
+                        2-0     07H     XF_HOR_ALIGN . Horizontal alignment (see above)
+                        3       08H     1 = Text is wrapped at right border
+                        6-4     70H     XF_VERT_ALIGN . Vertical alignment (see above)
+    7           1       XF_ROTATION: Text rotation angle (see above)
+    8           1       Bit     Mask    Contents
+                        3-0     0FH     Indent level
+                        4       10H     1 = Shrink content to fit into cell
+                        5               merge
+                        7-6     C0H     Text direction (BIFF8X only)
+                                        00b = According to context
+                                        01b = Left-to-right
+                                        10b = Right-to-left
+    9           1       Bit     Mask    Contents
+                        7-2     FCH     XF_USED_ATTRIB . Used attributes (see above)
+    10          4       Cell border lines and background area:
+                        Bit     Mask      Contents
+                        3-0     0000000FH Left line style
+                        7-4     000000F0H Right line style
+                        11-8    00000F00H Top line style
+                        15-12   0000F000H Bottom line style
+                        22-16   007F0000H Colour index for left line colour
+                        29-23   3F800000H Colour index for right line colour
+                        30      40000000H 1 = Diagonal line from top left to right bottom
+                        31      80000000H 1 = Diagonal line from bottom left to right top
+    14          4       Bit     Mask      Contents
+                        6-0     0000007FH Colour index for top line colour
+                        13-7    00003F80H Colour index for bottom line colour
+                        20-14   001FC000H Colour index for diagonal line colour
+                        24-21   01E00000H Diagonal line style
+                        31-26   FC000000H Fill pattern
+    18          2       Bit     Mask    Contents
+                        6-0     007FH   Colour index for pattern colour
+                        13-7    3F80H   Colour index for pattern background
+
+    """
+    _REC_ID = 0x00E0
+
+    def __init__(self, xf, xftype='cell'):
+        font_xf_idx, fmt_str_xf_idx, alignment, borders, pattern, protection = xf
+        fnt = pack('<H', font_xf_idx)
+        fmt = pack('<H', fmt_str_xf_idx)
+        if xftype == 'cell':
+            prt = pack('<H',
+                ((protection.cell_locked    & 0x01) << 0) |
+                ((protection.formula_hidden & 0x01) << 1)
+            )
+        else:
+            prt = pack('<H', 0xFFF5)
+        aln = pack('B',
+            ((alignment.horz & 0x07) << 0) |
+            ((alignment.wrap & 0x01) << 3) |
+            ((alignment.vert & 0x07) << 4)
+        )
+        rot = pack('B', alignment.rota)
+        txt = pack('B',
+            ((alignment.inde & 0x0F) << 0) |
+            ((alignment.shri & 0x01) << 4) |
+            ((alignment.merg & 0x01) << 5) |
+            ((alignment.dire & 0x03) << 6)
+        )
+        if xftype == 'cell':
+            used_attr = pack('B', 0xF8)
+        else:
+            used_attr = pack('B', 0xF4)
+
+        if borders.left == borders.NO_LINE:
+            borders.left_colour = 0x00
+        if borders.right == borders.NO_LINE:
+            borders.right_colour = 0x00
+        if borders.top == borders.NO_LINE:
+            borders.top_colour = 0x00
+        if borders.bottom == borders.NO_LINE:
+            borders.bottom_colour = 0x00
+        if borders.diag == borders.NO_LINE:
+            borders.diag_colour = 0x00
+        brd1 = pack('<L',
+            ((borders.left          & 0x0F) << 0 ) |
+            ((borders.right         & 0x0F) << 4 ) |
+            ((borders.top           & 0x0F) << 8 ) |
+            ((borders.bottom        & 0x0F) << 12) |
+            ((borders.left_colour   & 0x7F) << 16) |
+            ((borders.right_colour  & 0x7F) << 23) |
+            ((borders.need_diag1    & 0x01) << 30) |
+            ((borders.need_diag2    & 0x01) << 31)
+        )
+        brd2 = pack('<L',
+            ((borders.top_colour    & 0x7F) << 0 ) |
+            ((borders.bottom_colour & 0x7F) << 7 ) |
+            ((borders.diag_colour   & 0x7F) << 14) |
+            ((borders.diag          & 0x0F) << 21) |
+            ((pattern.pattern       & 0x3F) << 26)
+        )
+        pat = pack('<H',
+            ((pattern.pattern_fore_colour & 0x7F) << 0 ) |
+            ((pattern.pattern_back_colour & 0x7F) << 7 )
+        )
+        self._rec_data = fnt + fmt + prt + \
+                        aln + rot + txt + used_attr + \
+                        brd1 + brd2 + \
+                        pat
+
+class StyleRecord(BiffRecord):
+    """
+    STYLE record for user-defined cell styles, BIFF3-BIFF8:
+    Offset  Size    Contents
+    0       2       Bit     Mask    Contents
+                    11-0    0FFFH   Index to style XF record
+                    15      8000H   Always 0 for user-defined styles
+    2       var.    BIFF2-BIFF7: Non-empty byte string, 8-bit string length
+                    BIFF8: Non-empty Unicode string, 16-bit string length
+    STYLE record for built-in cell styles, BIFF3-BIFF8:
+    Offset  Size    Contents
+    0       2       Bit     Mask    Contents
+                    11-0    0FFFH   Index to style XF record
+                    15      8000H   Always 1 for built-in styles
+    2       1       Identifier of the built-in cell style:
+                        00H = Normal
+                        01H = RowLevel_lv (see next field)
+                        02H = ColLevel_lv (see next field)
+                        03H = Comma
+                        04H = Currency
+                        05H = Percent
+                        06H = Comma [0] (BIFF4-BIFF8)
+                        07H = Currency [0] (BIFF4-BIFF8)
+                        08H = Hyperlink (BIFF8)
+                        09H = Followed Hyperlink (BIFF8)
+    3       1       Level for RowLevel or ColLevel style
+                    (zero-based, lv), FFH otherwise
+    The  RowLevel  and  ColLevel  styles specify the formatting of subtotal
+    cells  in  a specific outline level. The level is specified by the last
+    field  in the STYLE record. Valid values are 0-6 for the outline levels
+    1-7.
+    """
+    _REC_ID = 0x0293
+
+    def __init__(self):
+        self._rec_data = pack('<HBB', 0x8000, 0x00, 0xFF)
+        # TODO: implement user-defined styles???
+
+
+class PaletteRecord(BiffRecord):
+    """
+    This  record  contains  the  definition  of  all  user-defined  colours
+    available for cell and object formatting.
+
+    Record PALETTE, BIFF3-BIFF8:
+
+    Offset  Size    Contents
+    0       2       Number of following colours (nm). Contains 16 in BIFF3-BIFF4 and 56 in BIFF5-BIFF8.
+    2       4*nm    List of nm RGB colours
+
+    The following table shows how colour indexes are used in other records:
+
+    Colour index    Resulting colour or internal list index
+    00H             Built-in Black (R = 00H, G = 00H, B = 00H)
+    01H             Built-in White (R = FFH, G = FFH, B = FFH)
+    02H             Built-in Red (R = FFH, G = 00H, B = 00H)
+    03H             Built-in Green (R = 00H, G = FFH, B = 00H)
+    04H             Built-in Blue (R = 00H, G = 00H, B = FFH)
+    05H             Built-in Yellow (R = FFH, G = FFH, B = 00H)
+    06H             Built-in Magenta (R = FFH, G = 00H, B = FFH)
+    07H             Built-in Cyan (R = 00H, G = FFH, B = FFH)
+    08H             First user-defined colour from the PALETTE record (entry 0 from record colour list)
+    .........................
+
+    17H (BIFF3-BIFF4) Last user-defined colour from the PALETTE record (entry 15 or 55 from record colour list)
+    3FH (BIFF5-BIFF8)
+
+    18H (BIFF3-BIFF4) System window text colour for border lines (used in records XF, CF, and
+    40H (BIFF5-BIFF8) WINDOW2 (BIFF8 only))
+
+    19H (BIFF3-BIFF4) System window background colour for pattern background (used in records XF, and CF)
+    41H (BIFF5-BIFF8)
+
+    43H             System face colour (dialogue background colour)
+    4DH             System window text colour for chart border lines
+    4EH             System window background colour for chart areas
+    4FH             Automatic colour for chart border lines (seems to be always Black)
+    50H             System ToolTip background colour (used in note objects)
+    51H             System ToolTip text colour (used in note objects)
+    7FFFH           System window text colour for fonts (used in records FONT, EFONT, and CF)
+
+    """
+    _REC_ID = 0x0092
+
+
+class BoundSheetRecord(BiffRecord):
+    """
+    This  record  is  located  in  the workbook globals area and represents
+    a  sheet  inside  of  the  workbook. For each sheet a BOUNDSHEET record
+    is  written.  It  stores  the sheet name and a stream offset to the BOF
+    record    within   the   workbook   stream.  The  record  is also known
+    as BUNDLESHEET.
+
+    Record BOUNDSHEET, BIFF5-BIFF8:
+    Offset  Size    Contents
+    0       4       Absolute stream position of the BOF record of the sheet represented by this record. This
+                    field is never encrypted in protected files.
+    4       1       Visibility:
+                        00H = Visible
+                        01H = Hidden
+                        02H = Strong hidden
+    5       1       Sheet type:
+                        00H = Worksheet
+                        02H = Chart
+                        06H = Visual Basic module
+    6       var.    Sheet name:
+                        BIFF5/BIFF7: Byte string, 8-bit string length
+                        BIFF8: Unicode string, 8-bit string length
+    """
+    _REC_ID = 0x0085
+
+    def __init__(self, stream_pos, visibility, sheetname, encoding='ascii'):
+        usheetname = upack1(sheetname, encoding)
+        uusheetname_len = len(usheetname)
+
+        self._rec_data = pack('<LBB%ds' % uusheetname_len, stream_pos, visibility, 0x00, usheetname)
+
+
+class ContinueRecord(BiffRecord):
+    """
+    Whenever  the content of a record exceeds the given limits (see table),
+    the  record  must  be  split.  Several  CONTINUE records containing the
+    additional data are added after the parent record.
+
+    BIFF version    Maximum data size of a record
+    BIFF2-BIFF7     2080 bytes (2084 bytes including record header)
+    BIFF8           8224 bytes (8228 bytes including record header) (0x2020)
+
+    Record CONTINUE, BIFF2-BIFF8:
+    Offset  Size    Contents
+    0       var.    Data continuation of the previous record
+
+    Unicode  strings  are  split in a special way. At the beginning of each
+    CONTINUE  record  the option flags byte is repeated. Only the character
+    size  flag  will  be set in this flags byte, the Rich-Text flag and the
+    Far-East  flag  are set to zero. In each CONTINUE record it is possible
+    that  the  character  size  changes  from  8-bit  characters  to 16-bit
+    characters and vice versa.
+
+    Never  a  Unicode  string  is  split  until  and  including  the  first
+    character.  That means, all header fields (string length, option flags,
+    optional Rich-Text size, and optional Far-East data size) and the first
+    character  of  the string have to occur together in the leading record,
+    or  have  to  be  moved completely into the CONTINUE record. Formatting
+    runs cannot be split between their components (character index and FONT
+    record  index).  If  a string is split between two formatting runs, the
+    option flags field will not be repeated in the CONTINUE record.
+    """
+    _REC_ID = 0x003C
+
+
+class SSTRecord(BiffRecord):
+    """
+    This  record  contains  a  list  of  all  strings  used anywhere in the
+    workbook.  Each string occurs only once. The workbook uses indexes into
+    the list to reference the strings.
+
+    Record SST, BIFF8:
+    Offset  Size    Contents
+    0       4       Total number of strings in the workbook (see below)
+    4       4       Number of following strings (nm)
+    8       var.    List of nm Unicode strings, 16-bit string length
+
+    The  first  field  of  the  SST  record  counts  the  total  occurrence
+    of  strings  in  the  workbook.  For  instance,  the string AAA is used
+    3  times  and  the string BBB is used 2 times. The first field contains
+    5 and the second field contains 2, followed by the two strings.
+    """
+    _REC_ID = 0x00FC
+
+
+class ExtSSTRecord(BiffRecord):
+    """
+    This  record  occurs  in  conjunction  with  the SST record. It is used
+    by  Excel  to create a hash table with stream offsets to the SST record
+    to optimise string search operations. Excel may not shorten this record
+    if  strings  are deleted from the shared string table, so the last part
+    might  contain  invalid  data. The stream indexes in this record divide
+    the SST into portions containing a constant number of strings.
+
+    Record EXTSST, BIFF8:
+
+    Offset  Size    Contents
+    0       2       Number of strings in a portion, this number is >=8
+    2       var.    List of OFFSET structures for all portions. Each OFFSET contains the following data:
+                        Offset Size Contents
+                        0       4   Absolute stream position of first string of the portion
+                        4       2   Position of first string of the portion inside of current record,
+                                    including record header. This counter restarts at zero, if the SST
+                                    record is continued with a CONTINUE record.
+                        6       2   Not used
+    """
+    _REC_ID = 0x00FF
+
+    def __init__(self, sst_stream_pos, str_placement, portions_len):
+        extsst = {}
+        abs_stream_pos = sst_stream_pos
+        str_counter = 0
+        portion_counter = 0
+        while str_counter < len(str_placement):
+            str_chunk_num, pos_in_chunk = str_placement[str_counter]
+            if str_chunk_num != portion_counter:
+                portion_counter = str_chunk_num
+                abs_stream_pos += portions_len[portion_counter-1]
+                #print hex(abs_stream_pos)
+            str_stream_pos = abs_stream_pos + pos_in_chunk + 4 # header
+            extsst[str_counter] = (pos_in_chunk, str_stream_pos)
+            str_counter += 1
+
+        exsst_str_count_delta = max(8, len(str_placement)*8/0x2000) # maybe smth else?
+        self._rec_data = pack('<H', exsst_str_count_delta)
+        str_counter = 0
+        while str_counter < len(str_placement):
+            self._rec_data += pack('<IHH', extsst[str_counter][1], extsst[str_counter][0], 0)
+            str_counter += exsst_str_count_delta
+
+class DimensionsRecord(BiffRecord):
+    """
+    Record DIMENSIONS, BIFF8:
+
+    Offset  Size    Contents
+    0       4       Index to first used row
+    4       4       Index to last used row, increased by 1
+    8       2       Index to first used column
+    10      2       Index to last used column, increased by 1
+    12      2       Not used
+    """
+    _REC_ID = 0x0200
+    def __init__(self, first_used_row, last_used_row, first_used_col, last_used_col):
+        if first_used_row > last_used_row or first_used_col > last_used_col:
+            # Special case: empty worksheet
+            first_used_row = first_used_col = 0
+            last_used_row = last_used_col = -1
+        self._rec_data = pack('<2L3H',
+            first_used_row, last_used_row + 1,
+            first_used_col, last_used_col + 1,
+            0x00)
+
+
+class Window2Record(BiffRecord):
+    """
+    Record WINDOW2, BIFF8:
+
+    Offset  Size Contents
+    0       2 Option flags (see below)
+    2       2 Index to first visible row
+    4       2 Index to first visible column
+    6       2 Colour index of grid line colour. Note that in BIFF2-BIFF7 an RGB colour is
+                written instead.
+    8       2 Not used
+    10      2 Cached magnification factor in page break preview (in percent); 0 = Default (60%)
+    12      2 Cached magnification factor in normal view (in percent); 0 = Default (100%)
+    14      4 Not used
+
+    In  BIFF8  this record stores used magnification factors for page break
+    preview  and  normal  view.  These  values  are  used  to  restore  the
+    magnification,  when the view is changed. The real magnification of the
+    currently  active  view  is  stored  in the SCL record. The type of the
+    active view is stored in the option flags field (see below).
+
+     0 0001H 0 = Show formula results 1 = Show formulas
+     1 0002H 0 = Do not show grid lines 1 = Show grid lines
+     2 0004H 0 = Do not show sheet headers 1 = Show sheet headers
+     3 0008H 0 = Panes are not frozen 1 = Panes are frozen (freeze)
+     4 0010H 0 = Show zero values as empty cells 1 = Show zero values
+     5 0020H 0 = Manual grid line colour 1 = Automatic grid line colour
+     6 0040H 0 = Columns from left to right 1 = Columns from right to left
+     7 0080H 0 = Do not show outline symbols 1 = Show outline symbols
+     8 0100H 0 = Keep splits if pane freeze is removed 1 = Remove splits if pane freeze is removed
+     9 0200H 0 = Sheet not selected 1 = Sheet selected (BIFF5-BIFF8)
+    10 0400H 0 = Sheet not visible 1 = Sheet visible (BIFF5-BIFF8)
+    11 0800H 0 = Show in normal view 1 = Show in page break preview (BIFF8)
+
+    The freeze flag specifies, if a following PANE record describes unfrozen or frozen panes.
+
+    *** This class appends the optional SCL record ***
+
+    Record SCL, BIFF4-BIFF8:
+
+    This record stores the magnification of the active view of the current worksheet.
+    In BIFF8 this can be either the normal view or the page break preview.
+    This is determined in the WINDOW2 record. The SCL record is part of the
+    Sheet View Settings Block.
+
+    Offset  Size    Contents
+    0       2       Numerator of the view magnification fraction (num)
+    2       2       Denumerator [denominator] of the view magnification fraction (den)
+    The magnification is stored as reduced fraction. The magnification results from num/den.
+
+    SJM note: Excel expresses (e.g.) 25% in reduced form i.e. 1/4. Reason unknown. This code
+    writes 25/100, and Excel is happy with that.
+
+    """
+    _REC_ID = 0x023E
+
+    def __init__(self, options, first_visible_row, first_visible_col,
+        grid_colour, preview_magn, normal_magn, scl_magn):
+        self._rec_data = pack('<7HL', options,
+                                    first_visible_row, first_visible_col,
+                                    grid_colour,
+                                    0x00,
+                                    preview_magn, normal_magn,
+                                    0x00)
+        if scl_magn:
+            self._scl_rec = pack('<4H', 0x00A0, 4, scl_magn, 100)
+        else:
+            self._scl_rec = b''
+
+    def get(self):
+        return self.get_rec_header() + self._rec_data + self._scl_rec
+
+
+class PanesRecord(BiffRecord):
+    """
+    This record stores the position of window panes. It is part of the Sheet
+    View Settings Block. If the sheet does not contain any splits, this
+    record will not occur.
+    A sheet can be split in two different ways, with unfrozen panes or with
+    frozen panes. A flag in the WINDOW2 record specifies, if the panes are
+    frozen, which affects the contents of this record.
+
+    Record PANE, BIFF2-BIFF8:
+    Offset      Size        Contents
+    0           2           Position of the vertical split
+                            (px, 0 = No vertical split):
+                            Unfrozen pane: Width of the left pane(s)
+                            (in twips = 1/20 of a point)
+                            Frozen pane: Number of visible
+                            columns in left pane(s)
+    2           2           Position of the horizontal split
+                            (py, 0 = No horizontal split):
+                            Unfrozen pane: Height of the top pane(s)
+                            (in twips = 1/20 of a point)
+                            Frozen pane: Number of visible
+                            rows in top pane(s)
+    4           2           Index to first visible row
+                            in bottom pane(s)
+    6           2           Index to first visible column
+                            in right pane(s)
+    8           1           Identifier of pane with active
+                            cell cursor
+    [9]         1           Not used (BIFF5-BIFF8 only, not written
+                            in BIFF2-BIFF4)
+
+    If the panes are frozen, pane 0 is always active, regardless
+    of the cursor position. The correct identifiers for all possible
+    combinations of visible panes are shown in the following pictures.
+
+    px = 0, py = 0                  px = 0, py > 0
+    --------------------------      ------------|-------------
+    |                        |      |                        |
+    |                        |      |           3            |
+    |                        |      |                        |
+    -           3            -      --------------------------
+    |                        |      |                        |
+    |                        |      |           2            |
+    |                        |      |                        |
+    --------------------------      ------------|-------------
+
+    px > 0, py = 0                  px > 0, py > 0
+    ------------|-------------      ------------|-------------
+    |           |            |      |           |            |
+    |           |            |      |     3     |      2     |
+    |           |            |      |           |            |
+    -     3     |      1     -      --------------------------
+    |           |            |      |           |            |
+    |           |            |      |     1     |      0     |
+    |           |            |      |           |            |
+    ------------|-------------      ------------|-------------
+    """
+    _REC_ID = 0x0041
+    def __init__(self, px, py, first_row_bottom, first_col_right, active_pane):
+        self._rec_data = pack('<5H', int(px), int(py), int(first_row_bottom),
+                              int(first_col_right), int(active_pane))
+
+
+class RowRecord(BiffRecord):
+    """
+    This  record  contains  the properties of a single row in a sheet. Rows
+    and cells in a sheet are divided into blocks of 32 rows.
+
+    Record ROW, BIFF3-BIFF8:
+
+    Offset  Size    Contents
+    0       2       Index of this row
+    2       2       Index to column of the first cell which is described by a cell record
+    4       2       Index to column of the last cell which is described by a cell record,
+                    increased by 1
+    6       2       Bit     Mask    Contents
+                    14-0    7FFFH   Height of the row, in twips = 1/20 of a point
+                    15      8000H   0 = Row has custom height; 1 = Row has default height
+    8       2       Not used
+    10      2       In BIFF3-BIFF4 this field contains a relative offset
+                    to calculate stream position of the first cell record
+                    for this row. In BIFF5-BIFF8 this field is not used
+                    anymore, but the DBCELL record instead.
+    12      4       Option flags and default row formatting:
+                    Bit     Mask        Contents
+                    2-0     00000007H   Outline level of the row
+                    4       00000010H   1 = Outline group starts or ends here (depending
+                                        on where the outline buttons are located,
+                                        see WSBOOL record), and is collapsed
+                    5       00000020H   1 = Row is hidden (manually, or by a filter or outline group)
+                    6       00000040H   1 = Row height and default font height do not match
+                    7       00000080H   1 = Row has explicit default format (fl)
+                    8       00000100H   Always 1
+                    27-16   0FFF0000H   If fl=1: Index to default XF record
+                    28      10000000H   1 = Additional space above the row. This flag is set,
+                                        if the upper border of at least one cell in this row
+                                        or if the lower border of at least one cell in the row
+                                        above is formatted with a thick line style.
+                                        Thin and medium line styles are not taken into account.
+                    29      20000000H   1 = Additional space below the row. This flag is set,
+                                        if the lower border of at least one cell in this row
+                                        or if the upper border of at least one cell in the row
+                                        below is formatted with a medium or thick line style.
+                                        Thin line styles are not taken into account.
+    """
+
+    _REC_ID = 0x0208
+
+    def __init__(self, index, first_col, last_col, height_options, options):
+        self._rec_data = pack('<6HL', index, first_col, last_col + 1,
+                                        height_options,
+                                        0x00, 0x00,
+                                        options)
+
+class LabelSSTRecord(BiffRecord):
+    """
+    This record represents a cell that contains a string. It replaces the
+    LABEL record and RSTRING record used in BIFF2-BIFF7.
+    """
+    _REC_ID = 0x00FD
+
+    def __init__(self, row, col, xf_idx, sst_idx):
+        self._rec_data = pack('<3HL', row, col, xf_idx, sst_idx)
+
+
+class MergedCellsRecord(BiffRecord):
+    """
+    This record contains all merged cell ranges of the current sheet.
+
+    Record MERGEDCELLS, BIFF8:
+
+    Offset  Size    Contents
+    0       var.    Cell range address list with all merged ranges
+
+    ------------------------------------------------------------------
+
+    A cell range address list consists of a field with the number of ranges
+    and the list of the range addresses.
+
+    Cell range address list, BIFF8:
+
+    Offset  Size            Contents
+    0       2               Number of following cell range addresses (nm)
+    2       8*nm            List of nm cell range addresses
+
+    ---------------------------------------------------------------------
+    Cell range address, BIFF8:
+
+    Offset  Size    Contents
+    0       2       Index to first row
+    2       2       Index to last row
+    4       2       Index to first column
+    6       2       Index to last column
+
+    """
+    _REC_ID = 0x00E5
+
+    def __init__(self, merged_list):
+        i = len(merged_list) - 1
+        while i >= 0:
+            j = 0
+            merged = b''
+            while (i >= 0) and (j < 0x403):
+                r1, r2, c1, c2 = merged_list[i]
+                merged += pack('<4H', r1, r2, c1, c2)
+                i -= 1
+                j += 1
+            self._rec_data += pack('<3H', self._REC_ID, len(merged) + 2, j) + \
+                                    merged
+
+    # for some reason Excel doesn't use CONTINUE
+    def get(self):
+        return self._rec_data
+
+class MulBlankRecord(BiffRecord):
+    """
+    This  record  represents  a  cell  range  of empty cells. All cells are
+    located in the same row.
+
+    Record MULBLANK, BIFF5-BIFF8:
+
+    Offset  Size    Contents
+    0       2       Index to row
+    2       2       Index to first column (fc)
+    4       2*nc    List of nc=lc-fc+1 16-bit indexes to XF records
+    4+2*nc  2       Index to last column (lc)
+    """
+    _REC_ID = 0x00BE
+
+    def __init__(self, row, first_col, last_col, xf_index):
+        blanks_count = last_col-first_col+1
+        self._rec_data = pack('%dH' % blanks_count, *([xf_index]*blanks_count))
+        self._rec_data = pack('<2H', row, first_col) +  self._rec_data + pack('<H',  last_col)
+
+
+class BlankRecord(BiffRecord):
+    """
+    This  record  represents  an empty cell.
+
+    Record BLANK, BIFF5-BIFF8:
+
+    Offset  Size    Contents
+    0       2       Index to row
+    2       2       Index to first column (fc)
+    4       2       indexes to XF record
+    """
+    _REC_ID = 0x0201
+
+    def __init__(self, row, col, xf_index):
+        self._rec_data = pack('<3H', row, col, xf_index)
+
+
+class RKRecord(BiffRecord):
+    """
+    This record represents a cell that contains an RK value (encoded integer or
+    floating-point value). If a floating-point value cannot be encoded to an RK value,
+    a NUMBER record will be written.
+    """
+    _REC_ID = 0x027E
+
+    def __init__(self, row, col, xf_index, rk_encoded):
+        self._rec_data = pack('<3Hi', row, col, xf_index, rk_encoded)
+
+
+class NumberRecord(BiffRecord):
+    """
+    This record represents a cell that contains an IEEE-754 floating-point value.
+    """
+    _REC_ID = 0x0203
+
+    def __init__(self, row, col, xf_index, number):
+        self._rec_data = pack('<3Hd', row, col, xf_index, number)
+
+class BoolErrRecord(BiffRecord):
+    """
+    This record represents a cell that contains a boolean or error value.
+    """
+    _REC_ID = 0x0205
+
+    def __init__(self, row, col, xf_index, number, is_error):
+        self._rec_data = pack('<3HBB', row, col, xf_index, number, is_error)
+
+
+class FormulaRecord(BiffRecord):
+    """
+    Offset Size Contents
+    0      2    Index to row
+    2      2    Index to column
+    4      2    Index to XF record
+    6      8    Result of the formula
+    14     2    Option flags:
+                Bit Mask    Contents
+                0   0001H   1 = Recalculate always
+                1   0002H   1 = Calculate on open
+                3   0008H   1 = Part of a shared formula
+    16     4    Not used
+    20     var. Formula data (RPN token array)
+
+    """
+    _REC_ID = 0x0006
+
+    def __init__(self, row, col, xf_index, rpn, calc_flags=0):
+        self._rec_data = pack('<3HQHL', row, col, xf_index, 0xFFFF000000000003, calc_flags & 3, 0) + rpn
+
+
+class GutsRecord(BiffRecord):
+    """
+    This record contains information about the layout of outline symbols.
+
+    Record GUTS, BIFF3-BIFF8:
+
+    Offset  Size    Contents
+    0       2       Width of the area to display row outlines (left of the sheet), in pixel
+    2       2       Height of the area to display column outlines (above the sheet), in pixel
+    4       2       Number of visible row outline levels (used row levels + 1; or 0, if not used)
+    6       2       Number of visible column outline levels (used column levels + 1; or 0, if not used)
+
+    """
+
+    _REC_ID = 0x0080
+
+    def __init__(self, row_gut_width, col_gut_height, row_visible_levels, col_visible_levels):
+        self._rec_data = pack('<4H', row_gut_width, col_gut_height, row_visible_levels, col_visible_levels)
+
+class WSBoolRecord(BiffRecord):
+    """
+    This  record stores a 16 bit value with Boolean options for the current
+    sheet.  From BIFF5 on the "Save external linked values" option is moved
+    to the record BOOKBOOL.
+
+    Option flags of record WSBOOL, BIFF3-BIFF8:
+
+    Bit     Mask    Contents
+    0       0001H   0 = Do not show automatic page breaks
+                    1 = Show automatic page breaks
+    4       0010H   0 = Standard sheet
+                    1 = Dialogue sheet (BIFF5-BIFF8)
+    5       0020H   0 = No automatic styles in outlines
+                    1 = Apply automatic styles to outlines
+    6       0040H   0 = Outline buttons above outline group
+                    1 = Outline buttons below outline group
+    7       0080H   0 = Outline buttons left of outline group
+                    1 = Outline buttons right of outline group
+    8       0100H   0 = Scale printout in percent
+                    1 = Fit printout to number of pages
+    9       0200H   0 = Save external linked values (BIFF3?BIFF4 only)
+                    1 = Do not save external linked values (BIFF3?BIFF4 only)
+    10      0400H   0 = Do not show row outline symbols
+                    1 = Show row outline symbols
+    11      0800H   0 = Do not show column outline symbols
+                    1 = Show column outline symbols
+    13-12   3000H   These flags specify the arrangement of windows.
+                    They are stored in BIFF4 only.
+                    00 = Arrange windows tiled
+                    01 = Arrange windows horizontal
+                    10 = Arrange windows vertical112 = Arrange windows cascaded
+    The following flags are valid for BIFF4-BIFF8 only:
+    14      4000H   0 = Standard expression evaluation
+                    1 = Alternative expression evaluation
+    15      8000H   0 = Standard formula entries
+                    1 = Alternative formula entries
+
+    """
+    _REC_ID = 0x0081
+
+    def __init__(self, options):
+        self._rec_data = pack('<H', options)
+
+class ColInfoRecord(BiffRecord):
+    """
+    This record specifies the width for a given range of columns.
+    If a column does not have a corresponding COLINFO record,
+    the width specified in the record STANDARDWIDTH is used. If
+    this record is also not present, the contents of the record
+    DEFCOLWIDTH is used instead.
+    This record also specifies a default XF record to use for
+    cells in the columns that are not described by any cell record
+    (which contain the XF index for that cell). Additionally,
+    the option flags field contains hidden, outline, and collapsed
+    options applied at the columns.
+
+    Record COLINFO, BIFF3-BIFF8:
+
+    Offset  Size    Contents
+    0       2       Index to first column in the range
+    2       2       Index to last column in the range
+    4       2       Width of the columns in 1/256 of the width of the zero character, using default font
+                    (first FONT record in the file)
+    6       2       Index to XF record for default column formatting
+    8       2       Option flags:
+                    Bits    Mask    Contents
+                    0       0001H   1 = Columns are hidden
+                    10-8    0700H   Outline level of the columns (0 = no outline)
+                    12      1000H   1 = Columns are collapsed
+    10      2       Not used
+
+    """
+    _REC_ID = 0x007D
+
+    def __init__(self, first_col, last_col, width, xf_index, options):
+        self._rec_data = pack('<6H', first_col, last_col, width, xf_index, options, 0)
+
+class CalcModeRecord(BiffRecord):
+    """
+    This record is part of the Calculation Settings Block.
+    It specifies whether to calculate formulas manually,
+    automatically or automatically except for multiple table operations.
+
+    Record CALCMODE, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       2       FFFFH = automatic except for multiple table operations
+                    0000H = manually
+                    0001H = automatically (default)
+    """
+    _REC_ID = 0x000D
+
+    def __init__(self, calc_mode):
+        self._rec_data = pack('<h', calc_mode)
+
+
+class CalcCountRecord(BiffRecord):
+    """
+    This record is part of the Calculation Settings Block. It specifies the maximum
+    number of times the formulas should be iteratively calculated. This is a fail-safe
+    against mutually recursive formulas locking up a spreadsheet application.
+
+    Record CALCCOUNT, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       2       Maximum number of iterations allowed in circular references
+    """
+
+    _REC_ID = 0x000C
+
+    def __init__(self, calc_count):
+        self._rec_data = pack('<H', calc_count)
+
+class RefModeRecord(BiffRecord):
+    """
+    This record is part of the Calculation Settings Block.
+    It stores which method is used to show cell addresses in formulas.
+    The “RC” mode uses numeric indexes for rows and columns,
+    i.e. “R(1)C(-1)”, or “R1C1:R2C2”.
+    The “A1” mode uses characters for columns and numbers for rows,
+    i.e. “B1”, or “$A$1:$B$2”.
+
+    Record REFMODE, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = RC mode; 1 = A1 mode
+
+    """
+    _REC_ID = 0x00F
+
+    def __init__(self, ref_mode):
+        self._rec_data = pack('<H', ref_mode)
+
+class IterationRecord(BiffRecord):
+    """
+    This record is part of the Calculation Settings Block.
+    It stores if iterations are allowed while calculating recursive formulas.
+
+    Record ITERATION, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = Iterations off; 1 = Iterations on
+    """
+    _REC_ID = 0x011
+
+    def __init__(self, iterations_on):
+        self._rec_data = pack('<H', iterations_on)
+
+class DeltaRecord(BiffRecord):
+    """
+    This record is part of the Calculation Settings Block.
+    It stores the maximum change of the result to exit an iteration.
+
+    Record DELTA, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       8       Maximum change in iteration
+                    (IEEE 754 floating-point value,
+                     64bit double precision)
+    """
+    _REC_ID = 0x010
+
+    def __init__(self, delta):
+        self._rec_data = pack('<d', delta)
+
+class SaveRecalcRecord(BiffRecord):
+    """
+    This record is part of the Calculation Settings Block.
+    It contains the “Recalculate before save” option in
+    Excel's calculation settings dialogue.
+
+    Record SAVERECALC, BIFF3-BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = Do not recalculate;
+                    1 = Recalculate before saving the document
+
+    """
+    _REC_ID = 0x05F
+
+    def __init__(self, recalc):
+        self._rec_data = pack('<H', recalc)
+
+class PrintHeadersRecord(BiffRecord):
+    """
+    This record stores if the row and column headers
+    (the areas with row numbers and column letters) will be printed.
+
+    Record PRINTHEADERS, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = Do not print row/column headers;
+                    1 = Print row/column headers
+    """
+    _REC_ID = 0x02A
+
+    def __init__(self, print_headers):
+        self._rec_data = pack('<H', print_headers)
+
+
+class PrintGridLinesRecord(BiffRecord):
+    """
+    This record stores if sheet grid lines will be printed.
+
+    Record PRINTGRIDLINES, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = Do not print sheet grid lines;
+                    1 = Print sheet grid lines
+
+    """
+    _REC_ID = 0x02B
+
+    def __init__(self, print_grid):
+        self._rec_data = pack('<H', print_grid)
+
+
+class GridSetRecord(BiffRecord):
+    """
+    This record specifies if the option to print sheet grid lines
+    (record PRINTGRIDLINES) has ever been changed.
+
+    Record GRIDSET, BIFF3-BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = Print grid lines option never changed
+                    1 = Print grid lines option changed
+    """
+    _REC_ID = 0x082
+
+    def __init__(self, print_grid_changed):
+        self._rec_data = pack('<H', print_grid_changed)
+
+
+class DefaultRowHeightRecord(BiffRecord):
+    """
+    This record specifies the default height and default flags
+    for rows that do not have a corresponding ROW record.
+
+    Record DEFAULTROWHEIGHT, BIFF3-BIFF8:
+
+    Offset  Size    Contents
+    0       2       Option flags:
+                    Bit Mask    Contents
+                    0   0001H   1 = Row height and default font height do not match
+                    1   0002H   1 = Row is hidden
+                    2   0004H   1 = Additional space above the row
+                    3   0008H   1 = Additional space below the row
+    2       2       Default height for unused rows, in twips = 1/20 of a point
+
+    """
+    _REC_ID = 0x0225
+
+    def __init__(self, options, def_height):
+        self._rec_data = pack('<2H', options, def_height)
+
+
+class DefColWidthRecord(BiffRecord):
+    """
+    This record specifies the default column width for columns that
+    do not have a specific width set using the record COLINFO or COLWIDTH.
+    This record has no effect, if a STANDARDWIDTH record is present in the file.
+
+    Record DEFCOLWIDTH, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       2       Column width in characters, using the width of the zero
+                    character from default font (first FONT record in the file)
+    """
+    _REC_ID = 0x0055
+
+    def __init__(self, def_width):
+        self._rec_data = pack('<H', options, def_width)
+
+class HorizontalPageBreaksRecord(BiffRecord):
+    """
+    This  record  is  part  of  the  Page  Settings  Block. It contains all
+    horizontal manual page breaks.
+
+    Record HORIZONTALPAGEBREAKS, BIFF8:
+    Offset  Size  Contents
+    0       2     Number of following row index structures (nm)
+    2       6nm   List of nm row index structures. Each row index
+                  structure contains:
+                    Offset  Size    Contents
+                    0       2       Index to first row below the page break
+                    2       2       Index to first column of this page break
+                    4       2       Index to last column of this page break
+
+    The row indexes in the lists must be ordered ascending.
+    If in BIFF8 a row contains several page breaks, they must be ordered
+    ascending by start column index.
+    """
+    _REC_ID = 0x001B
+
+    def __init__(self, breaks_list):
+        self._rec_data = pack('<H', len(breaks_list))
+        for r, c1, c2 in breaks_list:
+            self._rec_data += pack('<3H', r, c1, c2)
+
+class VerticalPageBreaksRecord(BiffRecord):
+    """
+    This  record  is  part  of  the  Page  Settings  Block. It contains all
+    vertical manual page breaks.
+
+    Record VERTICALPAGEBREAKS, BIFF8:
+    Offset  Size  Contents
+    0       2     Number of following column index structures (nm)
+    2       6nm   List of nm column index structures. Each column index
+                  structure contains:
+                    Offset  Size    Contents
+                    0       2       Index to first column following the page
+                                    break
+                    2       2       Index to first row of this page break
+                    4       2       Index to last row of this page break
+
+    The column indexes in the lists must be ordered ascending.
+    If in BIFF8 a column contains several page breaks, they must be ordered
+    ascending by start row index.
+    """
+    _REC_ID = 0x001A
+
+    def __init__(self, breaks_list):
+        self._rec_data = pack('<H', len(breaks_list))
+        for r, c1, c2 in breaks_list:
+            self._rec_data += pack('<3H', r, c1, c2)
+
+class HeaderRecord(BiffRecord):
+    """
+    This record is part of the Page Settings Block. It specifies the
+    page  header  string  for  the current worksheet. If this record is not
+    present  or  completely  empty  (record  size is 0), the sheet does not
+    contain a page header.
+
+    Record HEADER for non-empty page header, BIFF2-BIFF8:
+    Offset      Size    Contents
+    0           var.    Page header string
+                        BIFF2-BIFF7:    Non-empty byte string, 8bit string
+                        length
+                        BIFF8: Non-empty Unicode string, 16bit string length
+    The  header  string may contain special commands, i.e. placeholders for
+    the  page  number,  current  date, or text formatting attributes. These
+    fields  are  represented  by  single  letters (exception: font name and
+    size,  see  below)  with  a  leading  ampersand ("&"). If the ampersand
+    is  part  of the regular header text, it will be duplicated ("&&"). The
+    page  header is divided into 3 sections: the left, the centred, and the
+    right  section.  Each  section  is introduced by a special command. All
+    text  and all commands following are part of the selected section. Each
+    section  starts  with the text formatting specified in the default font
+    (first  FONT  record  in  the  file). Active formatting attributes from
+    a previous section do not go into the next section.
+
+    The following table shows all available commands:
+
+    Command         Contents
+    &&              The "&" character itself
+    &L              Start of the left section
+    &C              Start of the centred section
+    &R              Start of the right section
+    &P              Current page number
+    &N              Page count
+    &D              Current date
+    &T              Current time
+    &A              Sheet name (BIFF5-BIFF8)
+    &F              File name without path
+    &Z              File path without file name (BIFF8X)
+    &G              Picture (BIFF8X)
+    &B              Bold on/off (BIFF2-BIFF4)
+    &I              Italic on/off (BIFF2-BIFF4)
+    &U              Underlining on/off
+    &E              Double underlining on/off (BIFF5-BIFF8)
+    &S              Strikeout on/off
+    &X              Superscript on/off (BIFF5-BIFF8)
+    &Y              Subscript on/off (BIFF5-BIFF8)
+    &"<fontname>"   Set new font <fontname>
+    &"<fontname>,<fontstyle>"
+                    Set new font with specified style <fontstyle>.
+                    The style <fontstyle> is in most cases one of
+                    "Regular", "Bold", "Italic", or "Bold Italic".
+                    But this setting is dependent on the used font,
+                    it may differ (localised style names, or "Standard",
+                    "Oblique", ...). (BIFF5-BIFF8)
+    &<fontheight>   Set font height in points (<fontheight> is a decimal value).
+                    If this command is followed by a plain number to be printed
+                    in the header, it will be separated from the font height
+                    with a space character.
+
+    """
+    _REC_ID = 0x0014
+
+    def __init__(self, header_str):
+        self._rec_data = upack2(header_str)
+
+class FooterRecord(BiffRecord):
+    """
+    Semantic is equal to HEADER record
+    """
+    _REC_ID = 0x0015
+
+    def __init__(self, footer_str):
+        self._rec_data = upack2(footer_str)
+
+
+class HCenterRecord(BiffRecord):
+    """
+    This  record  is  part  of the Page Settings Block. It specifies if the
+    sheet is centred horizontally when printed.
+
+    Record HCENTER, BIFF3-BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = Print sheet left aligned
+                    1 = Print sheet centred horizontally
+
+    """
+    _REC_ID = 0x0083
+
+    def __init__(self, is_horz_center):
+        self._rec_data = pack('<H', is_horz_center)
+
+
+class VCenterRecord(BiffRecord):
+    """
+    This  record  is  part  of the Page Settings Block. It specifies if the
+    sheet is centred vertically when printed.
+
+    Record VCENTER, BIFF3-BIFF8:
+
+    Offset  Size    Contents
+    0       2       0 = Print sheet aligned at top page border
+                    1 = Print sheet vertically centred
+
+    """
+    _REC_ID = 0x0084
+
+    def __init__(self, is_vert_center):
+        self._rec_data = pack('<H', is_vert_center)
+
+
+class LeftMarginRecord(BiffRecord):
+    """
+    This  record  is  part of the Page Settings Block. It contains the left
+    page margin of the current worksheet.
+
+    Record LEFTMARGIN, BIFF2-BIFF8:
+
+    Offset  Size    Contents
+    0       8       Left page margin in inches
+                    (IEEE 754 floating-point value, 64bit double precision)
+
+    """
+    _REC_ID = 0x0026
+
+    def __init__(self, margin):
+        self._rec_data = pack('<d', margin)
+
+
+class RightMarginRecord(BiffRecord):
+    """
+    This  record  is  part of the Page Settings Block. It contains the right
+    page margin of the current worksheet.
+
+    Offset  Size    Contents
+    0       8       Right page margin in inches
+                    (IEEE 754 floating-point value, 64?bit double precision)
+
+    """
+    _REC_ID = 0x0027
+
+    def __init__(self, margin):
+        self._rec_data = pack('<d', margin)
+
+class TopMarginRecord(BiffRecord):
+    """
+    This  record  is  part of the Page Settings Block. It contains the top
+    page margin of the current worksheet.
+
+    Offset  Size    Contents
+    0       8       Top page margin in inches
+                    (IEEE 754 floating-point value, 64?bit double precision)
+
+    """
+    _REC_ID = 0x0028
+
+    def __init__(self, margin):
+        self._rec_data = pack('<d', margin)
+
+
+class BottomMarginRecord(BiffRecord):
+    """
+    This  record  is  part of the Page Settings Block. It contains the bottom
+    page margin of the current worksheet.
+
+    Offset  Size    Contents
+    0       8       Bottom page margin in inches
+                    (IEEE 754 floating-point value, 64?bit double precision)
+
+    """
+    _REC_ID = 0x0029
+
+    def __init__(self, margin):
+        self._rec_data = pack('<d', margin)
+
+class SetupPageRecord(BiffRecord):
+    """
+    This   record   is  part of the Page Settings Block. It stores the page
+    format   settings   of   the  current sheet. The pages may be scaled in
+    percent   or  by  using  an  absolute  number of pages. This setting is
+    located   in  the  WSBOOL  record.  If  pages  are  scaled in  percent,
+    the   scaling  factor  in  this  record is used, otherwise the "Fit  to
+    pages"  values. One of the "Fit to pages" values may be 0. In this case
+    the sheet is scaled to fit only to the other value.
+
+    Record SETUP, BIFF5-BIFF8:
+
+    Offset      Size    Contents
+    0           2       Paper size (see below)
+    2           2       Scaling factor in percent
+    4           2       Start page number
+    6           2       Fit worksheet width to this number of pages
+                        (0 = use as many as needed)
+    8           2       Fit worksheet height to this number of pages
+                        (0 = use as many as needed)
+    10          2       Option flags:
+                        Bit     Mask        Contents
+                        0       0001H       0 = Print pages in columns
+                                            1 = Print pages in rows
+                        1       0002H       0 = Landscape
+                                            1 = Portrait
+                        2       0004H       1 = Paper size, scaling factor,
+                                            paper orientation (portrait/landscape),
+                                            print resolution and number of copies
+                                            are not initialised
+                        3       0008H       0 = Print coloured
+                                            1 = Print black and white
+                        4       0010H       0 = Default print quality
+                                            1 = Draft quality
+                        5       0020H       0 = Do not print cell notes
+                                            1 = Print cell notes
+                        6       0040H       0 = Paper orientation setting is valid
+                                            1 = Paper orientation setting not
+                                            initialised
+                        7       0080H       0 = Automatic page numbers
+                                            1 = Use start page number
+                        The following flags are valid for BIFF8 only:
+                        9       0200H       0 = Print notes as displayed
+                                            1 = Print notes at end of sheet
+                        11-10   0C00H       00 = Print errors as displayed
+                                            01 = Do not print errors
+                                            10 = Print errors as "--"
+                                            11 = Print errors as "#N/A!"
+    12          2       Print resolution in dpi
+    14          2       Vertical print resolution in dpi
+    16          8       Header margin (IEEE 754 floating-point value,
+                        64bit double precision)
+    24          8       Footer margin (IEEE 754 floating-point value,
+                        64bit double precision)
+    32          2       Number of copies to print
+
+
+    PAPER TYPES:
+
+    Index   Paper type              Paper size
+    0       Undefined
+    1       Letter                  8 1/2" x 11"
+    2       Letter small            8 1/2" x 11"
+    3       Tabloid                 11" x 17"
+    4       Ledger                  17" x 11"
+    5       Legal                   8 1/2" x 14"
+    6       Statement               5 1/2" x 8 1/2"
+    7       Executive               7 1/4" x 10 1/2"
+    8       A3                      297mm x 420mm
+    9       A4                      210mm x 297mm
+    10      A4 small                210mm x 297mm
+    11      A5                      148mm x 210mm
+    12      B4 (JIS)                257mm x 364mm
+    13      B5 (JIS)                182mm x 257mm
+    14      Folio                   8 1/2" x 13"
+    15      Quarto                  215mm x 275mm
+    16      10x14                   10" x 14"
+    17      11x17                   11" x 17"
+    18      Note                    8 1/2" x 11"
+    19      Envelope #9             3 7/8" x 8 7/8"
+    20      Envelope #10            4 1/8" x 9 1/2"
+    21      Envelope #11            4 1/2" x 10 3/8"
+    22      Envelope #12            4 3/4" x 11"
+    23      Envelope #14            5" x 11 1/2"
+    24      C                       17" x 22"
+    25      D                       22" x 34"
+    26      E                       34" x 44"
+    27      Envelope DL             110mm x 220mm
+    28      Envelope C5             162mm x 229mm
+    29      Envelope C3             324mm x 458mm
+    30      Envelope C4             229mm x 324mm
+    31      Envelope C6             114mm x 162mm
+    32      Envelope C6/C5          114mm x 229mm
+    33      B4 (ISO)                250mm x 353mm
+    34      B5 (ISO)                176mm x 250mm
+    35      B6 (ISO)                125mm x 176mm
+    36      Envelope Italy          110mm x 230mm
+    37      Envelope Monarch        3 7/8" x 7 1/2"
+    38      63/4 Envelope           3 5/8" x 6 1/2"
+    39      US Standard Fanfold     14 7/8" x 11"
+    40      German Std. Fanfold     8 1/2" x 12"
+    41      German Legal Fanfold    8 1/2" x 13"
+    42      B4 (ISO)                250mm x 353mm
+    43      Japanese Postcard       100mm x 148mm
+    44      9x11                    9" x 11"
+    45      10x11                   10" x 11"
+    46      15x11                   15" x 11"
+    47      Envelope Invite         220mm x 220mm
+    48      Undefined
+    49      Undefined
+    50      Letter Extra            9 1/2" x 12"
+    51      Legal Extra             9 1/2" x 15"
+    52      Tabloid Extra           11 11/16" x 18"
+    53      A4 Extra                235mm x 322mm
+    54      Letter Transverse       8 1/2" x 11"
+    55      A4 Transverse           210mm x 297mm
+    56      Letter Extra Transv.    9 1/2" x 12"
+    57      Super A/A4              227mm x 356mm
+    58      Super B/A3              305mm x 487mm
+    59      Letter Plus             8 1/2" x 12 11/16"
+    60      A4 Plus                 210mm x 330mm
+    61      A5 Transverse           148mm x 210mm
+    62      B5 (JIS) Transverse     182mm x 257mm
+    63      A3 Extra                322mm x 445mm
+    64      A5 Extra                174mm x 235mm
+    65      B5 (ISO) Extra          201mm x 276mm
+    66      A2                      420mm x 594mm
+    67      A3 Transverse           297mm x 420mm
+    68      A3 Extra Transverse     322mm x 445mm
+    69      Dbl. Japanese Postcard  200mm x 148mm
+    70      A6                      105mm x 148mm
+    71
+    72
+    73
+    74
+    75      Letter Rotated          11" x 8 1/2"
+    76      A3 Rotated              420mm x 297mm
+    77      A4 Rotated              297mm x 210mm
+    78      A5 Rotated              210mm x 148mm
+    79      B4 (JIS) Rotated        364mm x 257mm
+    80      B5 (JIS) Rotated        257mm x 182mm
+    81      Japanese Postcard Rot.  148mm x 100mm
+    82      Dbl. Jap. Postcard Rot. 148mm x 200mm
+    83      A6 Rotated              148mm x 105mm
+    84
+    85
+    86
+    87
+    88      B6 (JIS)                128mm x 182mm
+    89      B6 (JIS) Rotated        182mm x 128mm
+    90      12x11                   12" x 11"
+
+    """
+    _REC_ID = 0x00A1
+    def __init__(self, paper, scaling, start_num, fit_width_to, fit_height_to,
+                    options,
+                    hres, vres,
+                    header_margin, footer_margin,
+                    num_copies):
+        self._rec_data = pack('<8H2dH', paper, scaling, start_num,
+                                        fit_width_to, fit_height_to, \
+                                        options,
+                                        hres, vres,
+                                        header_margin, footer_margin,
+                                        num_copies)
+
+class NameRecord(BiffRecord):
+    """
+    This record is part of a Link Table. It contains the name and the token
+    array of an internal defined name. Token arrays of defined names
+    contain tokens with aberrant token classes.
+
+    Record NAME, BIFF5/BIFF7:
+    Offset      Size    Contents
+       0          2     Option flags, see below
+       2          1     Keyboard shortcut (only for command macro names, see below)
+       3          1     Length of the name (character count, ln)
+       4          2     Size of the formula data (sz)
+       6          2     0 = Global name, otherwise index to EXTERNSHEET record (one-based)
+       8          2     0 = Global name, otherwise index to sheet (one-based)
+      10          1     Length of menu text (character count, lm)
+      11          1     Length of description text (character count, ld)
+      12          1     Length of help topic text (character count, lh)
+      13          1     Length of status bar text (character count, ls)
+      14         ln     Character array of the name
+    14+ln        sz     Formula data (RPN token array without size field, 4)
+  14+ln+sz       lm     Character array of menu text
+     var.        ld     Character array of description text
+     var.        lh     Character array of help topic text
+     var.        ls     Character array of status bar text
+
+    Record NAME, BIFF8:
+    Offset      Size Contents
+       0          2  Option flags, see below
+       2          1  Keyboard shortcut (only for command macro names, see below)
+       3          1  Length of the name (character count, ln)
+       4          2  Size of the formula data (sz)
+       6          2  Not used
+       8          2  0 = Global name, otherwise index to sheet (one-based)
+      10          1  Length of menu text (character count, lm)
+      11          1  Length of description text (character count, ld)
+      12          1  Length of help topic text (character count, lh)
+      13          1  Length of status bar text (character count, ls)
+      14        var. Name (Unicode string without length field, 3.4)
+     var.        sz  Formula data (RPN token array without size field, 4)
+    [var.]      var. (optional, only if lm > 0) Menu text (Unicode string without length field, 3.4)
+    [var.]      var. (optional, only if ld > 0) Description text (Unicode string without length field, 3.4)
+    [var.]      var. (optional, only if lh > 0) Help topic text (Unicode string without length field, 3.4)
+    [var.]      var. (optional, only if ls > 0) Status bar text (Unicode string without length field, 3.4)
+    """
+    _REC_ID = 0x0018
+
+    def __init__(self, options, keyboard_shortcut, name, sheet_index, rpn,
+                 menu_text=b'', desc_text=b'', help_text=b'', status_text=b''):
+        if type(name) == int:
+            uname = chr(name)
+        else:
+            uname = upack1(name)[1:]
+        uname_len = len(uname)
+
+        #~ self._rec_data = pack('<HBBHHHBBBB%ds%ds' % (uname_len, len(rpn)), options, keyboard_shortcut, uname_len, len(rpn), 0x0000, sheet_index, len(menu_text), len(desc_text), len(help_text), len(status_text), uname, rpn) + menu_text + desc_text + help_text + status_text
+        self._rec_data = pack('<HBBHHHBBBBB%ds%ds' % (uname_len, len(rpn)), options, keyboard_shortcut, uname_len, len(rpn), 0x0000, sheet_index, 0x00, len(menu_text), len(desc_text), len(help_text), len(status_text), uname, rpn) + menu_text + desc_text + help_text + status_text
+
+# Excel (both 2003 and 2007) don't like refs
+# split over a record boundary, which is what the
+# standard BiffRecord.get method does.
+
+# 8224 max data bytes in a BIFF record
+# 6 bytes per ref
+# 1370 = floor((8224 - 2) / 6.0) max refs in a record
+
+_maxRefPerRecord = 1370
+
+class ExternSheetRecord(BiffRecord):
+    """
+    In BIFF8 the record stores a list with indexes to SUPBOOK
+    records (list of REF structures, 6.100). See 5.10.3 for
+    details about external references in BIFF8.
+
+    Record EXTERNSHEET, BIFF8:
+    Offset          Size      Contents
+       0             2        Number of following REF structures (nm)
+       2           6nm        List of nm REF structures. Each REF contains the following data:
+                              Offset     Size     Contents
+                                 0         2      Index to SUPBOOK record
+                                 2         2      Index to first SUPBOOK sheet
+                                 4         2      Index to last SUPBOOK sheet
+    """
+    _REC_ID = 0x0017
+
+    def __init__(self, refs):
+
+        # do we always need this ref? or only if there are no refs?
+        # (I believe that if there are no refs then we should not generate the link table - Ruben)
+        #refs.insert(0, (0,0,0))
+
+        self.refs = refs
+
+    def get(self):
+        res = []
+        nrefs = len(self.refs)
+        for idx in range(0, nrefs, _maxRefPerRecord):
+            chunk = self.refs[idx:idx+_maxRefPerRecord]
+            krefs = len(chunk)
+            if idx: # CONTINUE record
+                header = pack("<HH", 0x003C, 6 * krefs)
+            else: # ExternSheetRecord
+                header = pack("<HHH", self._REC_ID, 6 * krefs + 2, nrefs)
+            res.append(header)
+            res.extend([pack("<HHH", *r) for r in chunk])
+        return b''.join(res)
+
+class SupBookRecord(BiffRecord):
+    """
+    This record mainly stores the URL of an external document
+    and a list of sheet names inside this document. Furthermore
+    it is used to store DDE and OLE object links, or to indicate
+    an internal 3D reference or an add-in function. See 5.10.3
+    for details about external references in BIFF8.
+
+    """
+    _REC_ID = 0x01AE
+
+class InternalReferenceSupBookRecord(SupBookRecord):
+    """
+    In each file occurs a SUPBOOK that is used for internal 3D
+    references. It stores the number of sheets of the own document.
+
+    Record SUPBOOK for 3D references, BIFF8:
+    Offset         Size   Contents
+      0             2     Number of sheets in this document
+      2             2     01H 04H (relict of BIFF5/BIFF7, the byte string "<04H>", see 3.9.1)
+
+    """
+
+    def __init__(self, num_sheets):
+        self._rec_data = pack('<HBB', num_sheets, 0x01, 0x04)
+
+class XcallSupBookRecord(SupBookRecord):
+    """
+    Add-in function names are stored in EXTERNNAME records following this record.
+
+    Offset  Size    Contents
+    0       2       0001H
+    2       2       01H 3AH (relict of BIFF5, the byte string ':', see EXTERNSHEET record, 5.41)
+
+    """
+
+    def __init__(self):
+        self._rec_data = pack('<HBB', 1, 0x01, 0x3A)
+
+
+class ExternnameRecord(BiffRecord):
+    """
+    Record EXTERNNAME for external names and Analysis add-in functions, BIFF5-BIFF8:
+    Offset  Size    Contents
+    0       2       Option flags (see below)
+    2       2       0 for global names, or:
+                    BIFF5: One-based index to EXTERNSHEET record containing the sheet name,
+                    BIFF8: One-based index to sheet list in preceding EXTERNALBOOK record.
+    4       2       Not used
+    6       var.    BIFF5: Name (byte string, 8-bit string length, ?2.5.2).
+                    BIFF8: Name (Unicode string, 8-bit string length, ?2.5.3).
+                    See DEFINEDNAME record (?5.33) for a list of built-in names, if the built-in flag is set
+                    in the option flags above.
+    var.    var.    Formula data (RPN token array, ?3)
+
+    Option flags for external names (BIFF5-BIFF8)
+    Bit     Mask    Contents
+    0       0001H   0 = Standard name; 1 = Built-in name
+    1       0002H   0 = Manual link; 1 = Automatic link (DDE links and OLE links only)
+    2       0004H   1 = Picture link (DDE links and OLE links only)
+    3       0008H   1 = This is the “StdDocumentName” identifier (DDE links only)
+    4       0010H   1 = OLE link
+    14-5    7FE0H   Clipboard format of last successful update (DDE links and OLE links only)
+    15      8000H   1 = Iconified picture link (BIFF8 OLE links only)
+    """
+    _REC_ID = 0x0023
+
+    def __init__(self, options=0, index=0, name=None, fmla=None):
+        self._rec_data = pack('<HHH', options, index, 0) + upack1(name) + fmla.encode()
+
diff --git a/tablib/packages/xlwt3/Bitmap.py b/tablib/packages/xlwt3/Bitmap.py
new file mode 100644
index 0000000..5da082b
--- /dev/null
+++ b/tablib/packages/xlwt3/Bitmap.py
@@ -0,0 +1,258 @@
+#  Portions are Copyright (C) 2005 Roman V. Kiseliov
+#  Portions are Copyright (c) 2004 Evgeny Filatov <fufff@users.sourceforge.net>
+#  Portions are Copyright (c) 2002-2004 John McNamara (Perl Spreadsheet::WriteExcel)
+
+from .BIFFRecords import BiffRecord
+from struct import *
+
+
+def _size_col(sheet, col):
+    return sheet.col_width(col)
+
+
+def _size_row(sheet, row):
+    return sheet.row_height(row)
+
+
+def _position_image(sheet, row_start, col_start, x1, y1, width, height):
+    """Calculate the vertices that define the position of the image as required by
+    the OBJ record.
+
+             +------------+------------+
+             |     A      |      B     |
+       +-----+------------+------------+
+       |     |(x1,y1)     |            |
+       |  1  |(A1)._______|______      |
+       |     |    |              |     |
+       |     |    |              |     |
+       +-----+----|    BITMAP    |-----+
+       |     |    |              |     |
+       |  2  |    |______________.     |
+       |     |            |        (B2)|
+       |     |            |     (x2,y2)|
+       +---- +------------+------------+
+
+    Example of a bitmap that covers some of the area from cell A1 to cell B2.
+
+    Based on the width and height of the bitmap we need to calculate 8 vars:
+        col_start, row_start, col_end, row_end, x1, y1, x2, y2.
+    The width and height of the cells are also variable and have to be taken into
+    account.
+    The values of col_start and row_start are passed in from the calling
+    function. The values of col_end and row_end are calculated by subtracting
+    the width and height of the bitmap from the width and height of the
+    underlying cells.
+    The vertices are expressed as a percentage of the underlying cell width as
+    follows (rhs values are in pixels):
+
+           x1 = X / W *1024
+           y1 = Y / H *256
+           x2 = (X-1) / W *1024
+           y2 = (Y-1) / H *256
+
+           Where:  X is distance from the left side of the underlying cell
+                   Y is distance from the top of the underlying cell
+                   W is the width of the cell
+                   H is the height of the cell
+
+    Note: the SDK incorrectly states that the height should be expressed as a
+    percentage of 1024.
+
+    col_start  - Col containing upper left corner of object
+    row_start  - Row containing top left corner of object
+    x1  - Distance to left side of object
+    y1  - Distance to top of object
+    width  - Width of image frame
+    height  - Height of image frame
+
+    """
+    # Adjust start column for offsets that are greater than the col width
+    while x1 >= _size_col(sheet, col_start):
+        x1 -= _size_col(sheet, col_start)
+        col_start += 1
+    # Adjust start row for offsets that are greater than the row height
+    while y1 >= _size_row(sheet, row_start):
+        y1 -= _size_row(sheet, row_start)
+        row_start += 1
+    # Initialise end cell to the same as the start cell
+    row_end = row_start   # Row containing bottom right corner of object
+    col_end = col_start   # Col containing lower right corner of object
+    width = width + x1 - 1
+    height = height + y1 - 1
+    # Subtract the underlying cell widths to find the end cell of the image
+    while (width >= _size_col(sheet, col_end)):
+        width -= _size_col(sheet, col_end)
+        col_end += 1
+    # Subtract the underlying cell heights to find the end cell of the image
+    while (height >= _size_row(sheet, row_end)):
+        height -= _size_row(sheet, row_end)
+        row_end += 1
+    # Bitmap isn't allowed to start or finish in a hidden cell, i.e. a cell
+    # with zero height or width.
+    if ((_size_col(sheet, col_start) == 0) or (_size_col(sheet, col_end) == 0)
+            or (_size_row(sheet, row_start) == 0) or (_size_row(sheet, row_end) == 0)):
+        return
+    # Convert the pixel values to the percentage value expected by Excel
+    x1 = int(float(x1) / _size_col(sheet, col_start) * 1024)
+    y1 = int(float(y1) / _size_row(sheet, row_start) * 256)
+    # Distance to right side of object
+    x2 = int(float(width) / _size_col(sheet, col_end) * 1024)
+    # Distance to bottom of object
+    y2 = int(float(height) / _size_row(sheet, row_end) * 256)
+    return (col_start, x1, row_start, y1, col_end, x2, row_end, y2)
+
+
+class ObjBmpRecord(BiffRecord):
+    _REC_ID = 0x005D    # Record identifier
+
+    def __init__(self, row, col, sheet, im_data_bmp, x, y, scale_x, scale_y):
+        # Scale the frame of the image.
+        width = im_data_bmp.width * scale_x
+        height = im_data_bmp.height * scale_y
+
+        # Calculate the vertices of the image and write the OBJ record
+        coordinates = _position_image(sheet, row, col, x, y, width, height)
+        # print coordinates
+        col_start, x1, row_start, y1, col_end, x2, row_end, y2 = coordinates
+
+        """Store the OBJ record that precedes an IMDATA record. This could be generalise
+        to support other Excel objects.
+
+        """
+        cObj = 0x0001      # Count of objects in file (set to 1)
+        OT = 0x0008        # Object type. 8 = Picture
+        id = 0x0001        # Object ID
+        grbit = 0x0614     # Option flags
+        colL = col_start    # Col containing upper left corner of object
+        dxL = x1            # Distance from left side of cell
+        rwT = row_start     # Row containing top left corner of object
+        dyT = y1            # Distance from top of cell
+        colR = col_end      # Col containing lower right corner of object
+        dxR = x2            # Distance from right of cell
+        rwB = row_end       # Row containing bottom right corner of object
+        dyB = y2            # Distance from bottom of cell
+        cbMacro = 0x0000    # Length of FMLA structure
+        Reserved1 = 0x0000  # Reserved
+        Reserved2 = 0x0000  # Reserved
+        icvBack = 0x09      # Background colour
+        icvFore = 0x09      # Foreground colour
+        fls = 0x00          # Fill pattern
+        fAuto = 0x00        # Automatic fill
+        icv = 0x08          # Line colour
+        lns = 0xff          # Line style
+        lnw = 0x01          # Line weight
+        fAutoB = 0x00       # Automatic border
+        frs = 0x0000        # Frame style
+        cf = 0x0009         # Image format, 9 = bitmap
+        Reserved3 = 0x0000  # Reserved
+        cbPictFmla = 0x0000 # Length of FMLA structure
+        Reserved4 = 0x0000  # Reserved
+        grbit2 = 0x0001     # Option flags
+        Reserved5 = 0x0000  # Reserved
+
+        data = pack("<L", cObj)
+        data += pack("<H", OT)
+        data += pack("<H", id)
+        data += pack("<H", grbit)
+        data += pack("<H", colL)
+        data += pack("<H", dxL)
+        data += pack("<H", rwT)
+        data += pack("<H", dyT)
+        data += pack("<H", colR)
+        data += pack("<H", dxR)
+        data += pack("<H", rwB)
+        data += pack("<H", dyB)
+        data += pack("<H", cbMacro)
+        data += pack("<L", Reserved1)
+        data += pack("<H", Reserved2)
+        data += pack("<B", icvBack)
+        data += pack("<B", icvFore)
+        data += pack("<B", fls)
+        data += pack("<B", fAuto)
+        data += pack("<B", icv)
+        data += pack("<B", lns)
+        data += pack("<B", lnw)
+        data += pack("<B", fAutoB)
+        data += pack("<H", frs)
+        data += pack("<L", cf)
+        data += pack("<H", Reserved3)
+        data += pack("<H", cbPictFmla)
+        data += pack("<H", Reserved4)
+        data += pack("<H", grbit2)
+        data += pack("<L", Reserved5)
+
+        self._rec_data = data
+
+def _process_bitmap(bitmap):
+    """Convert a 24 bit bitmap into the modified internal format used by Windows.
+    This is described in BITMAPCOREHEADER and BITMAPCOREINFO structures in the
+    MSDN library.
+
+    """
+    # Open file and binmode the data in case the platform needs it.
+    fh = open(bitmap, 'rb')
+    try:
+        # Slurp the file into a string.
+        data = fh.read()
+    finally:
+        fh.close()
+    # Check that the file is big enough to be a bitmap.
+    if len(data) <= 0x36:
+        raise Exception("bitmap doesn't contain enough data.")
+    # The first 2 bytes are used to identify the bitmap.
+    if (data[:2] != b"BM"):
+        raise Exception("bitmap doesn't appear to to be a valid bitmap image.")
+    # Remove bitmap data: ID.
+    data = data[2:]
+    # Read and remove the bitmap size. This is more reliable than reading
+    # the data size at offset 0x22.
+    #
+    size = unpack("<L", data[:4])[0]
+    size -=  0x36   # Subtract size of bitmap header.
+    size +=  0x0C   # Add size of BIFF header.
+    data = data[4:]
+    # Remove bitmap data: reserved, offset, header length.
+    data = data[12:]
+    # Read and remove the bitmap width and height. Verify the sizes.
+    width, height = unpack("<LL", data[:8])
+    data = data[8:]
+    if (width > 0xFFFF):
+        raise Exception("bitmap: largest image width supported is 65k.")
+    if (height > 0xFFFF):
+        raise Exception("bitmap: largest image height supported is 65k.")
+    # Read and remove the bitmap planes and bpp data. Verify them.
+    planes, bitcount = unpack("<HH", data[:4])
+    data = data[4:]
+    if (bitcount != 24):
+        raise Exception("bitmap isn't a 24bit true color bitmap.")
+    if (planes != 1):
+        raise Exception("bitmap: only 1 plane supported in bitmap image.")
+    # Read and remove the bitmap compression. Verify compression.
+    compression = unpack("<L", data[:4])[0]
+    data = data[4:]
+    if (compression != 0):
+        raise Exception("bitmap: compression not supported in bitmap image.")
+    # Remove bitmap data: data size, hres, vres, colours, imp. colours.
+    data = data[20:]
+    # Add the BITMAPCOREHEADER data
+    header = pack("<LHHHH", 0x000c, width, height, 0x01, 0x18)
+    data = header + data
+    return (width, height, size, data)
+
+
+class ImDataBmpRecord(BiffRecord):
+    _REC_ID = 0x007F
+
+    def __init__(self, filename):
+        """Insert a 24bit bitmap image in a worksheet. The main record required is
+        IMDATA but it must be proceeded by a OBJ record to define its position.
+
+        """
+        BiffRecord.__init__(self)
+
+        self.width, self.height, self.size, data = _process_bitmap(filename)
+        # Write the IMDATA record to store the bitmap data
+        cf = 0x09
+        env = 0x01
+        lcb = self.size
+        self._rec_data = pack("<HHL", cf, env, lcb) + data
diff --git a/tablib/packages/xlwt3/Cell.py b/tablib/packages/xlwt3/Cell.py
new file mode 100644
index 0000000..08a9e42
--- /dev/null
+++ b/tablib/packages/xlwt3/Cell.py
@@ -0,0 +1,233 @@
+from struct import unpack, pack
+from . import BIFFRecords
+
+class StrCell(object):
+    __slots__ = ["rowx", "colx", "xf_idx", "sst_idx"]
+
+    def __init__(self, rowx, colx, xf_idx, sst_idx):
+        self.rowx = rowx
+        self.colx = colx
+        self.xf_idx = xf_idx
+        self.sst_idx = sst_idx
+
+    def get_biff_data(self):
+        return pack('<5HL', 0x00FD, 10, self.rowx, self.colx, self.xf_idx, self.sst_idx)
+
+class BlankCell(object):
+    __slots__ = ["rowx", "colx", "xf_idx"]
+
+    def __init__(self, rowx, colx, xf_idx):
+        self.rowx = rowx
+        self.colx = colx
+        self.xf_idx = xf_idx
+
+    def get_biff_data(self):
+        return pack('<5H', 0x0201, 6, self.rowx, self.colx, self.xf_idx)
+
+class MulBlankCell(object):
+    __slots__ = ["rowx", "colx1", "colx2", "xf_idx"]
+
+    def __init__(self, rowx, colx1, colx2, xf_idx):
+        self.rowx = rowx
+        self.colx1 = colx1
+        self.colx2 = colx2
+        self.xf_idx = xf_idx
+
+    def get_biff_data(self):
+        return BIFFRecords.MulBlankRecord(self.rowx,
+            self.colx1, self.colx2, self.xf_idx).get()
+
+class NumberCell(object):
+    __slots__ = ["rowx", "colx", "xf_idx", "number"]
+
+    def __init__(self, rowx, colx, xf_idx, number):
+        self.rowx = rowx
+        self.colx = colx
+        self.xf_idx = xf_idx
+        self.number = float(number)
+
+    def get_encoded_data(self):
+        rk_encoded = 0
+        num = self.number
+
+        # The four possible kinds of RK encoding are *not* mutually exclusive.
+        # The 30-bit integer variety picks up the most.
+        # In the code below, the four varieties are checked in descending order
+        # of bangs per buck, or not at all.
+        # SJM 2007-10-01
+
+        if -0x20000000 <= num < 0x20000000: # fits in 30-bit *signed* int
+            inum = int(num)
+            if inum == num: # survives round-trip
+                rk_encoded = 2 | (inum << 2)
+                return 1, rk_encoded
+
+        temp = num * 100
+
+        if -0x20000000 <= temp < 0x20000000:
+            # That was step 1: the coded value will fit in
+            # a 30-bit signed integer.
+            itemp = int(round(temp, 0))
+            # That was step 2: "itemp" is the best candidate coded value.
+            # Now for step 3: simulate the decoding,
+            # to check for round-trip correctness.
+            if itemp / 100.0 == num:
+                rk_encoded = 3 | (itemp << 2)
+                return 1, rk_encoded
+
+        if 0: # Cost of extra pack+unpack not justified by tiny yield.
+            packed = pack('<d', num)
+            w01, w23 = unpack('<2i', packed)
+            if not w01 and not(w23 & 3):
+                return 1, w23
+
+            packed100 = pack('<d', temp)
+            w01, w23 = unpack('<2i', packed100)
+            if not w01 and not(w23 & 3):
+                return 1, w23 | 1
+
+        return 0, pack('<5Hd', 0x0203, 14, self.rowx, self.colx, self.xf_idx, num)
+
+    def get_biff_data(self):
+        isRK, value = self.get_encoded_data()
+        if isRK:
+            return pack('<5Hi', 0x27E, 10, self.rowx, self.colx, self.xf_idx, value)
+        return value # NUMBER record already packed
+
+class BooleanCell(object):
+    __slots__ = ["rowx", "colx", "xf_idx", "number"]
+
+    def __init__(self, rowx, colx, xf_idx, number):
+        self.rowx = rowx
+        self.colx = colx
+        self.xf_idx = xf_idx
+        self.number = number
+
+    def get_biff_data(self):
+        return BIFFRecords.BoolErrRecord(self.rowx,
+            self.colx, self.xf_idx, self.number, 0).get()
+
+error_code_map = {
+    0x00:  0, # Intersection of two cell ranges is empty
+    0x07:  7, # Division by zero
+    0x0F: 15, # Wrong type of operand
+    0x17: 23, # Illegal or deleted cell reference
+    0x1D: 29, # Wrong function or range name
+    0x24: 36, # Value range overflow
+    0x2A: 42, # Argument or function not available
+    '#NULL!' :  0, # Intersection of two cell ranges is empty
+    '#DIV/0!':  7, # Division by zero
+    '#VALUE!': 36, # Wrong type of operand
+    '#REF!'  : 23, # Illegal or deleted cell reference
+    '#NAME?' : 29, # Wrong function or range name
+    '#NUM!'  : 36, # Value range overflow
+    '#N/A!'  : 42, # Argument or function not available
+}
+
+class ErrorCell(object):
+    __slots__ = ["rowx", "colx", "xf_idx", "number"]
+
+    def __init__(self, rowx, colx, xf_idx, error_string_or_code):
+        self.rowx = rowx
+        self.colx = colx
+        self.xf_idx = xf_idx
+        try:
+            self.number = error_code_map[error_string_or_code]
+        except KeyError:
+            raise Exception('Illegal error value (%r)' % error_string_or_code)
+
+    def get_biff_data(self):
+        return BIFFRecords.BoolErrRecord(self.rowx,
+            self.colx, self.xf_idx, self.number, 1).get()
+
+class FormulaCell(object):
+    __slots__ = ["rowx", "colx", "xf_idx", "frmla", "calc_flags"]
+
+    def __init__(self, rowx, colx, xf_idx, frmla, calc_flags=0):
+        self.rowx = rowx
+        self.colx = colx
+        self.xf_idx = xf_idx
+        self.frmla = frmla
+        self.calc_flags = calc_flags
+
+    def get_biff_data(self):
+        return BIFFRecords.FormulaRecord(self.rowx,
+            self.colx, self.xf_idx, self.frmla.rpn(), self.calc_flags).get()
+
+# module-level function for *internal* use by the Row module
+
+def _get_cells_biff_data_mul(rowx, cell_items):
+    # Return the BIFF data for all cell records in the row.
+    # Adjacent BLANK|RK records are combined into MUL(BLANK|RK) records.
+    pieces = []
+    nitems = len(cell_items)
+    i = 0
+    while i < nitems:
+        icolx, icell = cell_items[i]
+        if isinstance(icell, NumberCell):
+            isRK, value = icell.get_encoded_data()
+            if not isRK:
+                pieces.append(value) # pre-packed NUMBER record
+                i += 1
+                continue
+            muldata = [(value, icell.xf_idx)]
+            target = NumberCell
+        elif isinstance(icell, BlankCell):
+            muldata = [icell.xf_idx]
+            target = BlankCell
+        else:
+            pieces.append(icell.get_biff_data())
+            i += 1
+            continue
+        lastcolx = icolx
+        j = i
+
+        packed_record = b'' # (to_py3): 'b' binary data
+        for j in range(i+1, nitems):
+            jcolx, jcell = cell_items[j]
+            if jcolx != lastcolx + 1:
+                nexti = j
+                break
+            if not isinstance(jcell, target):
+                nexti = j
+                break
+            if target == NumberCell:
+                isRK, value = jcell.get_encoded_data()
+                if not isRK:
+                    packed_record = value
+                    nexti = j + 1
+                    break
+                muldata.append((value, jcell.xf_idx))
+            else:
+                muldata.append(jcell.xf_idx)
+            lastcolx = jcolx
+        else:
+            nexti = j + 1
+        if target == NumberCell:
+            if lastcolx == icolx:
+                # RK record
+                value, xf_idx = muldata[0]
+                pieces.append(pack('<5Hi', 0x027E, 10, rowx, icolx, xf_idx, value))
+            else:
+                # MULRK record
+                nc = lastcolx - icolx + 1
+                pieces.append(pack('<4H', 0x00BD, 6 * nc + 6, rowx, icolx))
+                # (to_py3): 'b' binary data
+                pieces.append(b''.join([pack('<Hi', xf_idx, value) for value, xf_idx in muldata]))
+                pieces.append(pack('<H', lastcolx))
+        else:
+            if lastcolx == icolx:
+                # BLANK record
+                xf_idx = muldata[0]
+                pieces.append(pack('<5H', 0x0201, 6, rowx, icolx, xf_idx))
+            else:
+                # MULBLANK record
+                nc = lastcolx - icolx + 1
+                pieces.append(pack('<4H', 0x00BE, 2 * nc + 6, rowx, icolx))
+                # (to_py3): 'b' binary data
+                pieces.append(b''.join([pack('<H', xf_idx) for xf_idx in muldata]))
+                pieces.append(pack('<H', lastcolx))
+        if packed_record:
+            pieces.append(packed_record)
+        i = nexti
+    return b''.join(pieces) # (to_py3): 'b' binary data
diff --git a/tablib/packages/xlwt3/Column.py b/tablib/packages/xlwt3/Column.py
new file mode 100644
index 0000000..4c75a2c
--- /dev/null
+++ b/tablib/packages/xlwt3/Column.py
@@ -0,0 +1,34 @@
+# -*- coding: windows-1252 -*-
+
+from .BIFFRecords import ColInfoRecord
+
+class Column(object):
+    def __init__(self, colx, parent_sheet):
+        if not(isinstance(colx, int) and 0 <= colx <= 255):
+            raise ValueError("column index (%r) not an int in range(256)" % colx)
+        self._index = colx
+        self._parent = parent_sheet
+        self._parent_wb = parent_sheet.get_parent()
+        self._xf_index = 0x0F
+
+        self.width = 0x0B92
+        self.hidden = 0
+        self.level = 0
+        self.collapse = 0
+
+    def set_style(self, style):
+        self._xf_index = self._parent_wb.add_style(style)
+
+    def width_in_pixels(self):
+        # *** Approximation ****
+        return int(round(self.width * 0.0272 + 0.446, 0))
+
+    def get_biff_record(self):
+        options =  (self.hidden & 0x01) << 0
+        options |= (self.level & 0x07) << 8
+        options |= (self.collapse & 0x01) << 12
+
+        return ColInfoRecord(self._index, self._index, self.width, self._xf_index, options).get()
+
+
+
diff --git a/tablib/packages/xlwt3/CompoundDoc.py b/tablib/packages/xlwt3/CompoundDoc.py
new file mode 100644
index 0000000..d53726f
--- /dev/null
+++ b/tablib/packages/xlwt3/CompoundDoc.py
@@ -0,0 +1,516 @@
+import sys
+import struct
+
+ENCODING = 'utf-16-le'
+
+class Reader:
+    def __init__(self, filename, dump = False):
+        self.dump = dump
+        self.STREAMS = {}
+
+        doc = file(filename, 'rb').read()
+        self.header, self.data = doc[0:512], doc[512:]
+        del doc
+
+        self.__build_header()
+        self.__build_MSAT()
+        self.__build_SAT()
+        self.__build_directory()
+        self.__build_short_sectors_data()
+
+        if len(self.short_sectors_data) > 0:
+            self.__build_SSAT()
+        else:
+            if self.dump and (self.total_ssat_sectors != 0 or self.ssat_start_sid != -2):
+                print('NOTE: header says that must be', self.total_ssat_sectors, 'short sectors')
+                print('NOTE: starting at', self.ssat_start_sid, 'sector')
+                print('NOTE: but file does not contains data in short sectors')
+            self.ssat_start_sid = -2
+            self.total_ssat_sectors = 0
+            self.SSAT = [-2]
+
+        for dentry in self.dir_entry_list[1:]:
+            (did,
+             sz, name,
+             t, c,
+             did_left, did_right, did_root,
+             dentry_start_sid,
+             stream_size
+            ) = dentry
+            stream_data = b''
+            if stream_size > 0:
+                if stream_size >= self.min_stream_size:
+                    args = (self.data, self.SAT, dentry_start_sid, self.sect_size)
+                else:
+                    args = (self.short_sectors_data, self.SSAT, dentry_start_sid, self.short_sect_size)
+                stream_data = self.get_stream_data(*args)
+
+            if name != b'':
+                # BAD IDEA: names may be equal. NEED use full paths...
+                self.STREAMS[name] = stream_data
+
+
+    def __build_header(self):
+        self.doc_magic             = self.header[0:8]
+
+        if self.doc_magic != b'\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1':
+            raise Exception('Not an OLE file.')
+
+        self.file_uid              = self.header[8:24]
+        self.rev_num               = self.header[24:26]
+        self.ver_num               = self.header[26:28]
+        self.byte_order            = self.header[28:30]
+        self.log2_sect_size,       = struct.unpack('<H', self.header[30:32])
+        self.log2_short_sect_size, = struct.unpack('<H', self.header[32:34])
+        self.total_sat_sectors,    = struct.unpack('<L', self.header[44:48])
+        self.dir_start_sid,        = struct.unpack('<l', self.header[48:52])
+        self.min_stream_size,      = struct.unpack('<L', self.header[56:60])
+        self.ssat_start_sid,       = struct.unpack('<l', self.header[60:64])
+        self.total_ssat_sectors,   = struct.unpack('<L', self.header[64:68])
+        self.msat_start_sid,       = struct.unpack('<l', self.header[68:72])
+        self.total_msat_sectors,   = struct.unpack('<L', self.header[72:76])
+
+        self.sect_size        = 1 << self.log2_sect_size
+        self.short_sect_size  = 1 << self.log2_short_sect_size
+
+        if self.dump:
+            print('file magic: ')
+            print_bin_data(self.doc_magic)
+
+            print('file uid: ')
+            print_bin_data(self.file_uid)
+
+            print('revision number: ')
+            print_bin_data(self.rev_num)
+
+            print('version number: ')
+            print_bin_data(self.ver_num)
+
+            print('byte order: ')
+            print_bin_data(self.byte_order)
+
+            print('sector size                                :', hex(self.sect_size), self.sect_size)
+            #print 'total sectors in file                      :', hex(self.total_sectors), self.total_sectors
+            print('short sector size                          :', hex(self.short_sect_size), self.short_sect_size)
+            print('Total number of sectors used for the SAT   :', hex(self.total_sat_sectors), self.total_sat_sectors)
+            print('SID of first sector of the directory stream:', hex(self.dir_start_sid), self.dir_start_sid)
+            print('Minimum size of a standard stream          :', hex(self.min_stream_size), self.min_stream_size)
+            print('SID of first sector of the SSAT            :', hex(self.ssat_start_sid), self.ssat_start_sid)
+            print('Total number of sectors used for the SSAT  :', hex(self.total_ssat_sectors), self.total_ssat_sectors)
+            print('SID of first additional sector of the MSAT :', hex(self.msat_start_sid), self.msat_start_sid)
+            print('Total number of sectors used for the MSAT  :', hex(self.total_msat_sectors), self.total_msat_sectors)
+
+
+    def __build_MSAT(self):
+        self.MSAT = list(struct.unpack('<109l', self.header[76:]))
+
+        next = self.msat_start_sid
+        while next > 0:
+            msat_sector = struct.unpack('<128l', self.data[next*self.sect_size:(next+1)*self.sect_size])
+            self.MSAT.extend(msat_sector[:127])
+            next = msat_sector[-1]
+
+        if self.dump:
+            print('MSAT (header part): \n', self.MSAT[:109])
+            print('additional MSAT sectors: \n', self.MSAT[109:])
+
+
+    def __build_SAT(self):
+        sat_stream = b''.join([self.data[i*self.sect_size:(i+1)*self.sect_size] for i in self.MSAT if i >= 0])
+
+        sat_sids_count = len(sat_stream) >> 2
+        self.SAT = struct.unpack('<%dl' % sat_sids_count, sat_stream) # SIDs tuple
+
+        if self.dump:
+            print('SAT sid count:\n', sat_sids_count)
+            print('SAT content:\n', self.SAT)
+
+
+    def __build_SSAT(self):
+        ssat_stream = self.get_stream_data(self.data, self.SAT, self.ssat_start_sid, self.sect_size)
+
+        ssids_count = len(ssat_stream) >> 2
+        self.SSAT = struct.unpack('<%dl' % ssids_count, ssat_stream)
+
+        if self.dump:
+            print('SSID count:', ssids_count)
+            print('SSAT content:\n', self.SSAT)
+
+
+    def __build_directory(self):
+        dir_stream = self.get_stream_data(self.data, self.SAT, self.dir_start_sid, self.sect_size)
+
+        self.dir_entry_list = []
+
+        i = 0
+        while i < len(dir_stream):
+            dentry = dir_stream[i:i+128] # 128 -- dir entry size
+            i += 128
+
+            did = len(self.dir_entry_list)
+            sz, = struct.unpack('<H', dentry[64:66])
+            if sz > 0 :
+                name = dentry[0:sz-2].decode('utf_16_le', 'replace')
+            else:
+                name = b''
+            t,  = struct.unpack('B', dentry[66])
+            c,  = struct.unpack('B', dentry[67])
+            did_left ,  = struct.unpack('<l', dentry[68:72])
+            did_right ,  = struct.unpack('<l', dentry[72:76])
+            did_root ,  = struct.unpack('<l', dentry[76:80])
+            dentry_start_sid ,  = struct.unpack('<l', dentry[116:120])
+            stream_size ,  = struct.unpack('<L', dentry[120:124])
+
+            self.dir_entry_list.extend([(did, sz, name, t, c,
+                                            did_left, did_right, did_root,
+                                            dentry_start_sid, stream_size)])
+
+        if self.dump:
+            dentry_types = {
+                0x00: 'Empty',
+                0x01: 'User storage',
+                0x02: 'User stream',
+                0x03: 'LockBytes',
+                0x04: 'Property',
+                0x05: 'Root storage'
+            }
+            node_colours = {
+                0x00: 'Red',
+                0x01: 'Black'
+            }
+            print('total directory entries:', len(self.dir_entry_list))
+
+            for dentry in self.dir_entry_list:
+                (did, sz, name, t, c,
+                 did_left, did_right, did_root,
+                 dentry_start_sid, stream_size) = dentry
+                print('DID', did)
+                print('Size of the used area of the character buffer of the name:', sz)
+                print('dir entry name:', repr(name))
+                print('type of entry:', t, dentry_types[t])
+                print('entry colour:', c, node_colours[c])
+                print('left child DID :', did_left)
+                print('right child DID:', did_right)
+                print('root DID       :', did_root)
+                print('start SID       :', dentry_start_sid)
+                print('stream size     :', stream_size)
+                if stream_size == 0:
+                    print('stream is empty')
+                elif stream_size >= self.min_stream_size:
+                    print('stream stored as normal stream')
+                else:
+                    print('stream stored as short-stream')
+
+
+    def __build_short_sectors_data(self):
+        (did, sz, name, t, c,
+         did_left, did_right, did_root,
+         dentry_start_sid, stream_size) = self.dir_entry_list[0]
+        assert t == 0x05 # Short-Stream Container Stream (SSCS) resides in Root Storage
+        if stream_size == 0:
+            self.short_sectors_data = b''
+        else:
+            self.short_sectors_data = self.get_stream_data(self.data, self.SAT, dentry_start_sid, self.sect_size)
+
+
+    def get_stream_data(self, data, SAT, start_sid, sect_size):
+        sid = start_sid
+        chunks = [(sid, sid)]
+        stream_data = b''
+
+        while SAT[sid] >= 0:
+            next_in_chain = SAT[sid]
+            last_chunk_start, last_chunk_finish = chunks[-1]
+            if next_in_chain == last_chunk_finish + 1:
+                chunks[-1] = last_chunk_start, next_in_chain
+            else:
+                chunks.extend([(next_in_chain, next_in_chain)])
+            sid = next_in_chain
+        for s, f in chunks:
+            stream_data += data[s*sect_size:(f+1)*sect_size]
+        #print chunks
+        return stream_data
+
+
+def print_bin_data(data):
+    i = 0
+    while i < len(data):
+        j = 0
+        while (i < len(data)) and (j < 16):
+            c = b'0x%02X' % ord(data[i])
+            sys.stdout.write(c)
+            sys.stdout.write(' ')
+            i += 1
+            j += 1
+        print()
+    if i == 0:
+        print('<NO DATA>')
+
+
+
+# This implementation writes only 'Root Entry', 'Workbook' streams
+# and 2 empty streams for aligning directory stream on sector boundary
+#
+# LAYOUT:
+# 0         header
+# 76                MSAT (1st part: 109 SID)
+# 512       workbook stream
+# ...       additional MSAT sectors if streams' size > about 7 Mb == (109*512 * 128)
+# ...       SAT
+# ...       directory stream
+#
+# NOTE: this layout is "ad hoc". It can be more general. RTFM
+
+class XlsDoc:
+    SECTOR_SIZE = 0x0200
+    MIN_LIMIT   = 0x1000
+
+    SID_FREE_SECTOR  = -1
+    SID_END_OF_CHAIN = -2
+    SID_USED_BY_SAT  = -3
+    SID_USED_BY_MSAT = -4
+
+    def __init__(self):
+        self.book_stream_sect = []
+
+        self.dir_stream = b''
+        self.dir_stream_sect = []
+
+        self.packed_SAT = b''
+        self.SAT_sect = []
+
+        self.packed_MSAT_1st = b''
+        self.packed_MSAT_2nd = b''
+        self.MSAT_sect_2nd = []
+
+        self.header = b''
+
+    def __build_directory(self): # align on sector boundary
+        self.dir_stream = b''
+
+        #(to_py3): replaced = b'\x00'.join(b'Root Entry\x00') + b'\x00'
+        dentry_name      = 'Root Entry\x00'.encode(ENCODING)
+        dentry_name_sz   = len(dentry_name)
+        dentry_name_pad  = b'\x00'*(64 - dentry_name_sz)
+        dentry_type      = 0x05 # root storage
+        dentry_colour    = 0x01 # black
+        dentry_did_left  = -1
+        dentry_did_right = -1
+        dentry_did_root  = 1
+        dentry_start_sid = -2
+        dentry_stream_sz = 0
+
+        self.dir_stream += struct.pack('<64s H 2B 3l 9L l L L',
+           dentry_name + dentry_name_pad,
+           dentry_name_sz,
+           dentry_type,
+           dentry_colour,
+           dentry_did_left,
+           dentry_did_right,
+           dentry_did_root,
+           0, 0, 0, 0, 0, 0, 0, 0, 0,
+           dentry_start_sid,
+           dentry_stream_sz,
+           0
+        )
+        # (to_py3): replaced = b'\x00'.join(b'Workbook\x00') + b'\x00'
+        dentry_name      = 'Workbook\x00'.encode(ENCODING)
+        dentry_name_sz   = len(dentry_name)
+        dentry_name_pad  = b'\x00'*(64 - dentry_name_sz)
+        dentry_type      = 0x02 # user stream
+        dentry_colour    = 0x01 # black
+        dentry_did_left  = -1
+        dentry_did_right = -1
+        dentry_did_root  = -1
+        dentry_start_sid = 0
+        dentry_stream_sz = self.book_stream_len
+
+        self.dir_stream += struct.pack('<64s H 2B 3l 9L l L L',
+           dentry_name + dentry_name_pad,
+           dentry_name_sz,
+           dentry_type,
+           dentry_colour,
+           dentry_did_left,
+           dentry_did_right,
+           dentry_did_root,
+           0, 0, 0, 0, 0, 0, 0, 0, 0,
+           dentry_start_sid,
+           dentry_stream_sz,
+           0
+        )
+
+        # padding
+        dentry_name      = b''
+        dentry_name_sz   = len(dentry_name)
+        dentry_name_pad  = b'\x00'*(64 - dentry_name_sz)
+        dentry_type      = 0x00 # empty
+        dentry_colour    = 0x01 # black
+        dentry_did_left  = -1
+        dentry_did_right = -1
+        dentry_did_root  = -1
+        dentry_start_sid = -2
+        dentry_stream_sz = 0
+
+        self.dir_stream += struct.pack('<64s H 2B 3l 9L l L L',
+           dentry_name + dentry_name_pad,
+           dentry_name_sz,
+           dentry_type,
+           dentry_colour,
+           dentry_did_left,
+           dentry_did_right,
+           dentry_did_root,
+           0, 0, 0, 0, 0, 0, 0, 0, 0,
+           dentry_start_sid,
+           dentry_stream_sz,
+           0
+        ) * 2
+
+    def __build_sat(self):
+        # Build SAT
+        book_sect_count = self.book_stream_len >> 9
+        dir_sect_count  = len(self.dir_stream) >> 9
+
+        total_sect_count     = book_sect_count + dir_sect_count
+        SAT_sect_count       = 0
+        MSAT_sect_count      = 0
+        SAT_sect_count_limit = 109
+        while total_sect_count > 128*SAT_sect_count or SAT_sect_count > SAT_sect_count_limit:
+            SAT_sect_count   += 1
+            total_sect_count += 1
+            if SAT_sect_count > SAT_sect_count_limit:
+                MSAT_sect_count      += 1
+                total_sect_count     += 1
+                SAT_sect_count_limit += 127
+
+
+        SAT = [self.SID_FREE_SECTOR]*128*SAT_sect_count
+
+        sect = 0
+        while sect < book_sect_count - 1:
+            self.book_stream_sect.append(sect)
+            SAT[sect] = sect + 1
+            sect += 1
+        self.book_stream_sect.append(sect)
+        SAT[sect] = self.SID_END_OF_CHAIN
+        sect += 1
+
+        while sect < book_sect_count + MSAT_sect_count:
+            self.MSAT_sect_2nd.append(sect)
+            SAT[sect] = self.SID_USED_BY_MSAT
+            sect += 1
+
+        while sect < book_sect_count + MSAT_sect_count + SAT_sect_count:
+            self.SAT_sect.append(sect)
+            SAT[sect] = self.SID_USED_BY_SAT
+            sect += 1
+
+        while sect < book_sect_count + MSAT_sect_count + SAT_sect_count + dir_sect_count - 1:
+            self.dir_stream_sect.append(sect)
+            SAT[sect] = sect + 1
+            sect += 1
+        self.dir_stream_sect.append(sect)
+        SAT[sect] = self.SID_END_OF_CHAIN
+        sect += 1
+
+        self.packed_SAT = struct.pack('<%dl' % (SAT_sect_count*128), *SAT)
+
+        MSAT_1st = [self.SID_FREE_SECTOR]*109
+        for i, SAT_sect_num in zip(list(range(0, 109)), self.SAT_sect):
+            MSAT_1st[i] = SAT_sect_num
+        self.packed_MSAT_1st = struct.pack('<109l', *MSAT_1st)
+
+        MSAT_2nd = [self.SID_FREE_SECTOR]*128*MSAT_sect_count
+        if MSAT_sect_count > 0:
+            MSAT_2nd[- 1] = self.SID_END_OF_CHAIN
+
+        i = 109
+        msat_sect = 0
+        sid_num = 0
+        while i < SAT_sect_count:
+            if (sid_num + 1) % 128 == 0:
+                #print 'link: ',
+                msat_sect += 1
+                if msat_sect < len(self.MSAT_sect_2nd):
+                    MSAT_2nd[sid_num] = self.MSAT_sect_2nd[msat_sect]
+            else:
+                #print 'sid: ',
+                MSAT_2nd[sid_num] = self.SAT_sect[i]
+                i += 1
+            #print sid_num, MSAT_2nd[sid_num]
+            sid_num += 1
+
+        self.packed_MSAT_2nd = struct.pack('<%dl' % (MSAT_sect_count*128), *MSAT_2nd)
+
+        #print vars()
+        #print zip(range(0, sect), SAT)
+        #print self.book_stream_sect
+        #print self.MSAT_sect_2nd
+        #print MSAT_2nd
+        #print self.SAT_sect
+        #print self.dir_stream_sect
+
+
+    def __build_header(self):
+        doc_magic             = b'\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1'
+        file_uid              = b'\x00'*16
+        rev_num               = b'\x3E\x00'
+        ver_num               = b'\x03\x00'
+        byte_order            = b'\xFE\xFF'
+        log_sect_size         = struct.pack('<H', 9)
+        log_short_sect_size   = struct.pack('<H', 6)
+        not_used0             = b'\x00'*10
+        total_sat_sectors     = struct.pack('<L', len(self.SAT_sect))
+        dir_start_sid         = struct.pack('<l', self.dir_stream_sect[0])
+        not_used1             = b'\x00'*4
+        min_stream_size       = struct.pack('<L', 0x1000)
+        ssat_start_sid        = struct.pack('<l', -2)
+        total_ssat_sectors    = struct.pack('<L', 0)
+
+        if len(self.MSAT_sect_2nd) == 0:
+            msat_start_sid        = struct.pack('<l', -2)
+        else:
+            msat_start_sid        = struct.pack('<l', self.MSAT_sect_2nd[0])
+
+        total_msat_sectors    = struct.pack('<L', len(self.MSAT_sect_2nd))
+
+        self.header =       b''.join([  doc_magic,
+                                        file_uid,
+                                        rev_num,
+                                        ver_num,
+                                        byte_order,
+                                        log_sect_size,
+                                        log_short_sect_size,
+                                        not_used0,
+                                        total_sat_sectors,
+                                        dir_start_sid,
+                                        not_used1,
+                                        min_stream_size,
+                                        ssat_start_sid,
+                                        total_ssat_sectors,
+                                        msat_start_sid,
+                                        total_msat_sectors
+                                    ])
+
+
+    def save(self, file_name_or_filelike_obj, stream):
+        # 1. Align stream on 0x1000 boundary (and therefore on sector boundary)
+        padding = b'\x00' * (0x1000 - (len(stream) % 0x1000))
+        self.book_stream_len = len(stream) + len(padding)
+
+        self.__build_directory()
+        self.__build_sat()
+        self.__build_header()
+
+        f = file_name_or_filelike_obj
+        we_own_it = not hasattr(f, 'write')
+        if we_own_it:
+            f = open(file_name_or_filelike_obj, 'wb')
+        f.write(self.header)
+        f.write(self.packed_MSAT_1st)
+        f.write(stream)
+        f.write(padding)
+        f.write(self.packed_MSAT_2nd)
+        f.write(self.packed_SAT)
+        f.write(self.dir_stream)
+        if we_own_it:
+            f.close()
diff --git a/tablib/packages/xlwt3/ExcelFormula.py b/tablib/packages/xlwt3/ExcelFormula.py
new file mode 100644
index 0000000..c72cb86
--- /dev/null
+++ b/tablib/packages/xlwt3/ExcelFormula.py
@@ -0,0 +1,41 @@
+from . import ExcelFormulaParser, ExcelFormulaLexer
+import struct
+from .antlr import ANTLRException
+
+
+class Formula(object):
+    __slots__ = ["__init__",  "__s", "__parser", "__sheet_refs", "__xcall_refs"]
+
+
+    def __init__(self, s):
+        try:
+            self.__s = s
+            lexer = ExcelFormulaLexer.Lexer(s)
+            self.__parser = ExcelFormulaParser.Parser(lexer)
+            self.__parser.formula()
+            self.__sheet_refs = self.__parser.sheet_references
+            self.__xcall_refs = self.__parser.xcall_references
+        except ANTLRException as e:
+            # print e
+            raise ExcelFormulaParser.FormulaParseException("can't parse formula " + s)
+
+    def get_references(self):
+        return self.__sheet_refs, self.__xcall_refs
+
+    def patch_references(self, patches):
+        for offset, idx in patches:
+            self.__parser.rpn = self.__parser.rpn[:offset] + struct.pack('<H', idx) + self.__parser.rpn[offset+2:]
+
+    def text(self):
+        return self.__s
+
+    def rpn(self):
+        '''
+        Offset    Size    Contents
+        0         2       Size of the following formula data (sz)
+        2         sz      Formula data (RPN token array)
+        [2+sz]    var.    (optional) Additional data for specific tokens
+
+        '''
+        return struct.pack("<H", len(self.__parser.rpn)) + self.__parser.rpn
+
diff --git a/tablib/packages/xlwt3/ExcelFormulaLexer.py b/tablib/packages/xlwt3/ExcelFormulaLexer.py
new file mode 100644
index 0000000..5dc546c
--- /dev/null
+++ b/tablib/packages/xlwt3/ExcelFormulaLexer.py
@@ -0,0 +1,126 @@
+import sys
+from .antlr import EOF, CommonToken as Tok, TokenStream, TokenStreamException
+import struct
+from . import ExcelFormulaParser
+from re import compile as recompile, match, LOCALE, UNICODE, IGNORECASE, VERBOSE
+
+
+int_const_pattern = r"\d+\b"
+flt_const_pattern = r"""
+    (?:
+        (?: \d* \. \d+ ) # .1 .12 .123 etc 9.1 etc 98.1 etc
+        |
+        (?: \d+ \. ) # 1. 12. 123. etc
+    )
+    # followed by optional exponent part
+    (?: [Ee] [+-]? \d+ ) ?
+    """
+str_const_pattern = r'"(?:[^"]|"")*"'
+#range2d_pattern   = recompile(r"\$?[A-I]?[A-Z]\$?\d+:\$?[A-I]?[A-Z]\$?\d+"
+ref2d_r1c1_pattern = r"[Rr]0*[1-9][0-9]*[Cc]0*[1-9][0-9]*"
+ref2d_pattern     = r"\$?[A-I]?[A-Z]\$?0*[1-9][0-9]*"
+true_pattern      = r"TRUE\b"
+false_pattern     = r"FALSE\b"
+if_pattern        = r"IF\b"
+choose_pattern    = r"CHOOSE\b"
+name_pattern      = r"\w[\.\w]*"
+quotename_pattern = r"'(?:[^']|'')*'" #### It's essential that this bracket be non-grouping.
+ne_pattern        = r"<>"
+ge_pattern        = r">="
+le_pattern        = r"<="
+
+pattern_type_tuples = (
+    (flt_const_pattern, ExcelFormulaParser.NUM_CONST),
+    (int_const_pattern, ExcelFormulaParser.INT_CONST),
+    (str_const_pattern, ExcelFormulaParser.STR_CONST),
+#    (range2d_pattern  , ExcelFormulaParser.RANGE2D),
+    (ref2d_r1c1_pattern, ExcelFormulaParser.REF2D_R1C1),
+    (ref2d_pattern    , ExcelFormulaParser.REF2D),
+    (true_pattern     , ExcelFormulaParser.TRUE_CONST),
+    (false_pattern    , ExcelFormulaParser.FALSE_CONST),
+    (if_pattern       , ExcelFormulaParser.FUNC_IF),
+    (choose_pattern   , ExcelFormulaParser.FUNC_CHOOSE),
+    (name_pattern     , ExcelFormulaParser.NAME),
+    (quotename_pattern, ExcelFormulaParser.QUOTENAME),
+    (ne_pattern,        ExcelFormulaParser.NE),
+    (ge_pattern,        ExcelFormulaParser.GE),
+    (le_pattern,        ExcelFormulaParser.LE),
+)
+
+_re = recompile(
+    '(' + ')|('.join([i[0] for i in pattern_type_tuples]) + ')',
+    VERBOSE+LOCALE+IGNORECASE)
+
+_toktype = [None] + [i[1] for i in pattern_type_tuples]
+# need dummy at start because re.MatchObject.lastindex counts from 1
+
+single_char_lookup = {
+    '=': ExcelFormulaParser.EQ,
+    '<': ExcelFormulaParser.LT,
+    '>': ExcelFormulaParser.GT,
+    '+': ExcelFormulaParser.ADD,
+    '-': ExcelFormulaParser.SUB,
+    '*': ExcelFormulaParser.MUL,
+    '/': ExcelFormulaParser.DIV,
+    ':': ExcelFormulaParser.COLON,
+    ';': ExcelFormulaParser.SEMICOLON,
+    ',': ExcelFormulaParser.COMMA,
+    '(': ExcelFormulaParser.LP,
+    ')': ExcelFormulaParser.RP,
+    '&': ExcelFormulaParser.CONCAT,
+    '%': ExcelFormulaParser.PERCENT,
+    '^': ExcelFormulaParser.POWER,
+    '!': ExcelFormulaParser.BANG,
+    }
+
+class Lexer(TokenStream):
+    def __init__(self, text):
+        self._text = text[:]
+        self._pos = 0
+        self._line = 0
+
+    def isEOF(self):
+        return len(self._text) <= self._pos
+
+    def curr_ch(self):
+        return self._text[self._pos]
+
+    def next_ch(self, n = 1):
+        self._pos += n
+
+    def is_whitespace(self):
+        return self.curr_ch() in " \t\n\r\f\v"
+
+    def match_pattern(self):
+        m = _re.match(self._text, self._pos)
+        if not m:
+            return None
+        self._pos = m.end(0)
+        return Tok(type = _toktype[m.lastindex], text = m.group(0), col = m.start(0) + 1)
+
+    def nextToken(self):
+        # skip whitespace
+        while not self.isEOF() and self.is_whitespace():
+            self.next_ch()
+        if self.isEOF():
+            return Tok(type = EOF)
+        # first, try to match token with 2 or more chars
+        t = self.match_pattern()
+        if t:
+            return t
+        # second, we want 1-char tokens
+        te = self.curr_ch()
+        try:
+            ty = single_char_lookup[te]
+        except KeyError:
+            raise TokenStreamException(
+                "Unexpected char %r in column %u." % (self.curr_ch(), self._pos))
+        self.next_ch()
+        return Tok(type=ty, text=te, col=self._pos)
+
+if __name__ == '__main__':
+    try:
+        for t in Lexer(""" 1.23 456 "abcd" R2C2 a1 iv65536 true false if choose a_name 'qname' <> >= <= """):
+            print(t)
+    except TokenStreamException as e:
+        print("error:", e)
diff --git a/tablib/packages/xlwt3/ExcelFormulaParser.py b/tablib/packages/xlwt3/ExcelFormulaParser.py
new file mode 100644
index 0000000..5e73934
--- /dev/null
+++ b/tablib/packages/xlwt3/ExcelFormulaParser.py
@@ -0,0 +1,659 @@
+### $ANTLR 2.7.7 (20060930): "xlwt/excel-formula.g" -> "ExcelFormulaParser.py"$
+### import antlr and other modules ..
+import sys
+from . import antlr
+
+### header action >>>
+import struct
+from . import Utils
+from .UnicodeUtils import upack1
+from .ExcelMagic import *
+
+_RVAdelta =     {"R": 0, "V": 0x20, "A": 0x40}
+_RVAdeltaRef =  {"R": 0, "V": 0x20, "A": 0x40, "D": 0x20}
+_RVAdeltaArea = {"R": 0, "V": 0x20, "A": 0x40, "D": 0}
+
+
+class FormulaParseException(Exception):
+    """
+    An exception indicating that a Formula could not be successfully parsed.
+    """
+### header action <<<
+### preamble action>>>
+
+### preamble action <<<
+
+### import antlr.Token
+from .antlr import Token
+### >>>The Known Token Types <<<
+SKIP                = antlr.SKIP
+INVALID_TYPE        = antlr.INVALID_TYPE
+EOF_TYPE            = antlr.EOF_TYPE
+EOF                 = antlr.EOF
+NULL_TREE_LOOKAHEAD = antlr.NULL_TREE_LOOKAHEAD
+MIN_USER_TYPE       = antlr.MIN_USER_TYPE
+TRUE_CONST = 4
+FALSE_CONST = 5
+STR_CONST = 6
+NUM_CONST = 7
+INT_CONST = 8
+FUNC_IF = 9
+FUNC_CHOOSE = 10
+NAME = 11
+QUOTENAME = 12
+EQ = 13
+NE = 14
+GT = 15
+LT = 16
+GE = 17
+LE = 18
+ADD = 19
+SUB = 20
+MUL = 21
+DIV = 22
+POWER = 23
+PERCENT = 24
+LP = 25
+RP = 26
+LB = 27
+RB = 28
+COLON = 29
+COMMA = 30
+SEMICOLON = 31
+REF2D = 32
+REF2D_R1C1 = 33
+BANG = 34
+CONCAT = 35
+
+class Parser(antlr.LLkParser):
+    ### user action >>>
+    ### user action <<<
+
+    def __init__(self, *args, **kwargs):
+        antlr.LLkParser.__init__(self, *args, **kwargs)
+        self.tokenNames = _tokenNames
+        ### __init__ header action >>>
+        self.rpn = b""
+        self.sheet_references = []
+        self.xcall_references = []
+        ### __init__ header action <<<
+
+    def formula(self):
+        self.expr("V")
+
+    def expr(self, arg_type):
+        self.prec0_expr(arg_type)
+        while True:
+            if ((self.LA(1) >= EQ and self.LA(1) <= LE)):
+                pass
+                la1 = self.LA(1)
+                if False:
+                    pass
+                elif la1 and la1 in [EQ]:
+                    pass
+                    self.match(EQ)
+                    op = struct.pack('B', ptgEQ)
+                elif la1 and la1 in [NE]:
+                    pass
+                    self.match(NE)
+                    op = struct.pack('B', ptgNE)
+                elif la1 and la1 in [GT]:
+                    pass
+                    self.match(GT)
+                    op = struct.pack('B', ptgGT)
+                elif la1 and la1 in [LT]:
+                    pass
+                    self.match(LT)
+                    op = struct.pack('B', ptgLT)
+                elif la1 and la1 in [GE]:
+                    pass
+                    self.match(GE)
+                    op = struct.pack('B', ptgGE)
+                elif la1 and la1 in [LE]:
+                    pass
+                    self.match(LE)
+                    op = struct.pack('B', ptgLE)
+                else:
+                        raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+                self.prec0_expr(arg_type)
+                self.rpn += op
+            else:
+                break
+
+
+    def prec0_expr(self,
+        arg_type
+    ):
+
+        pass
+        self.prec1_expr(arg_type)
+        while True:
+            if (self.LA(1)==CONCAT):
+                pass
+                pass
+                self.match(CONCAT)
+                op = struct.pack('B', ptgConcat)
+                self.prec1_expr(arg_type)
+                self.rpn += op
+            else:
+                break
+
+
+    def prec1_expr(self,
+        arg_type
+    ):
+
+        pass
+        self.prec2_expr(arg_type)
+        while True:
+            if (self.LA(1)==ADD or self.LA(1)==SUB):
+                pass
+                la1 = self.LA(1)
+                if False:
+                    pass
+                elif la1 and la1 in [ADD]:
+                    pass
+                    self.match(ADD)
+                    op = struct.pack('B', ptgAdd)
+                elif la1 and la1 in [SUB]:
+                    pass
+                    self.match(SUB)
+                    op = struct.pack('B', ptgSub)
+                else:
+                        raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+                self.prec2_expr(arg_type)
+                self.rpn += op;
+                          # print "**prec1_expr4 %s" % arg_type
+            else:
+                break
+
+
+    def prec2_expr(self,
+        arg_type
+    ):
+
+        pass
+        self.prec3_expr(arg_type)
+        while True:
+            if (self.LA(1)==MUL or self.LA(1)==DIV):
+                pass
+                la1 = self.LA(1)
+                if False:
+                    pass
+                elif la1 and la1 in [MUL]:
+                    pass
+                    self.match(MUL)
+                    op = struct.pack('B', ptgMul)
+                elif la1 and la1 in [DIV]:
+                    pass
+                    self.match(DIV)
+                    op = struct.pack('B', ptgDiv)
+                else:
+                        raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+                self.prec3_expr(arg_type)
+                self.rpn += op
+            else:
+                break
+
+
+    def prec3_expr(self,
+        arg_type
+    ):
+
+        pass
+        self.prec4_expr(arg_type)
+        while True:
+            if (self.LA(1)==POWER):
+                pass
+                pass
+                self.match(POWER)
+                op = struct.pack('B', ptgPower)
+                self.prec4_expr(arg_type)
+                self.rpn += op
+            else:
+                break
+
+
+    def prec4_expr(self,
+        arg_type
+    ):
+
+        pass
+        self.prec5_expr(arg_type)
+        la1 = self.LA(1)
+        if False:
+            pass
+        elif la1 and la1 in [PERCENT]:
+            pass
+            self.match(PERCENT)
+            self.rpn += struct.pack('B', ptgPercent)
+        elif la1 and la1 in [EOF,EQ,NE,GT,LT,GE,LE,ADD,SUB,MUL,DIV,POWER,RP,COMMA,SEMICOLON,CONCAT]:
+            pass
+        else:
+                raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+
+    def prec5_expr(self,
+        arg_type
+    ):
+
+        la1 = self.LA(1)
+        if False:
+            pass
+        elif la1 and la1 in [TRUE_CONST,FALSE_CONST,STR_CONST,NUM_CONST,INT_CONST,FUNC_IF,FUNC_CHOOSE,NAME,QUOTENAME,LP,REF2D]:
+            pass
+            self.primary(arg_type)
+        elif la1 and la1 in [SUB]:
+            pass
+            self.match(SUB)
+            self.primary(arg_type)
+            self.rpn += struct.pack('B', ptgUminus)
+        else:
+                raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+
+    def primary(self,
+        arg_type
+    ):
+
+        str_tok = None
+        int_tok = None
+        num_tok = None
+        ref2d_tok = None
+        ref2d1_tok = None
+        ref2d2_tok = None
+        ref3d_ref2d = None
+        ref3d_ref2d2 = None
+        name_tok = None
+        func_tok = None
+        la1 = self.LA(1)
+        if False:
+            pass
+        elif la1 and la1 in [TRUE_CONST]:
+            pass
+            self.match(TRUE_CONST)
+            self.rpn += struct.pack("2B", ptgBool, 1)
+        elif la1 and la1 in [FALSE_CONST]:
+            pass
+            self.match(FALSE_CONST)
+            self.rpn += struct.pack("2B", ptgBool, 0)
+        elif la1 and la1 in [STR_CONST]:
+            pass
+            str_tok = self.LT(1)
+            self.match(STR_CONST)
+            self.rpn += struct.pack("B", ptgStr) + upack1(str_tok.text[1:-1].replace("\"\"", "\""))
+        elif la1 and la1 in [NUM_CONST]:
+            pass
+            num_tok = self.LT(1)
+            self.match(NUM_CONST)
+            self.rpn += struct.pack("<Bd", ptgNum, float(num_tok.text))
+        elif la1 and la1 in [FUNC_IF]:
+            pass
+            self.match(FUNC_IF)
+            self.match(LP)
+            self.expr("V")
+            la1 = self.LA(1)
+            if False:
+                pass
+            elif la1 and la1 in [SEMICOLON]:
+                pass
+                self.match(SEMICOLON)
+            elif la1 and la1 in [COMMA]:
+                pass
+                self.match(COMMA)
+            else:
+                    raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+            self.rpn += struct.pack("<BBH", ptgAttr, 0x02, 0) # tAttrIf
+            pos0 = len(self.rpn) - 2
+            self.expr(arg_type)
+            la1 = self.LA(1)
+            if False:
+                pass
+            elif la1 and la1 in [SEMICOLON]:
+                pass
+                self.match(SEMICOLON)
+            elif la1 and la1 in [COMMA]:
+                pass
+                self.match(COMMA)
+            else:
+                    raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+            self.rpn += struct.pack("<BBH", ptgAttr, 0x08, 0) # tAttrSkip
+            pos1 = len(self.rpn) - 2
+            self.rpn = self.rpn[:pos0] + struct.pack("<H", pos1-pos0) + self.rpn[pos0+2:]
+            self.expr(arg_type)
+            self.match(RP)
+            self.rpn += struct.pack("<BBH", ptgAttr, 0x08, 3) # tAttrSkip
+            self.rpn += struct.pack("<BBH", ptgFuncVarR, 3, 1) # 3 = nargs, 1 = IF func
+            pos2 = len(self.rpn)
+            self.rpn = self.rpn[:pos1] + struct.pack("<H", pos2-(pos1+2)-1) + self.rpn[pos1+2:]
+        elif la1 and la1 in [FUNC_CHOOSE]:
+            pass
+            self.match(FUNC_CHOOSE)
+            arg_type = b"R"
+            rpn_chunks = []
+            self.match(LP)
+            self.expr("V")
+            rpn_start = len(self.rpn)
+            ref_markers = [len(self.sheet_references)]
+            while True:
+                if (self.LA(1)==COMMA or self.LA(1)==SEMICOLON):
+                    pass
+                    la1 = self.LA(1)
+                    if False:
+                        pass
+                    elif la1 and la1 in [SEMICOLON]:
+                        pass
+                        self.match(SEMICOLON)
+                    elif la1 and la1 in [COMMA]:
+                        pass
+                        self.match(COMMA)
+                    else:
+                            raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+                    mark = len(self.rpn)
+                    la1 = self.LA(1)
+                    if False:
+                        pass
+                    elif la1 and la1 in [TRUE_CONST,FALSE_CONST,STR_CONST,NUM_CONST,INT_CONST,FUNC_IF,FUNC_CHOOSE,NAME,QUOTENAME,SUB,LP,REF2D]:
+                        pass
+                        self.expr(arg_type)
+                    elif la1 and la1 in [RP,COMMA,SEMICOLON]:
+                        pass
+                        self.rpn += struct.pack("B", ptgMissArg)
+                    else:
+                            raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+                    rpn_chunks.append(self.rpn[mark:])
+                    ref_markers.append(len(self.sheet_references))
+                else:
+                    break
+
+            self.match(RP)
+            self.rpn = self.rpn[:rpn_start]
+            nc = len(rpn_chunks)
+            chunklens = [len(chunk) for chunk in rpn_chunks]
+            skiplens = [0] * nc
+            skiplens[-1] = 3
+            for ic in range(nc-1, 0, -1):
+                skiplens[ic-1] = skiplens[ic] + chunklens[ic] + 4
+            jump_pos = [2 * nc + 2]
+            for ic in range(nc):
+                jump_pos.append(jump_pos[-1] + chunklens[ic] + 4)
+            chunk_shift = 2 * nc + 6 # size of tAttrChoose
+            for ic in range(nc):
+                for refx in range(ref_markers[ic], ref_markers[ic+1]):
+                    ref = self.sheet_references[refx]
+                    self.sheet_references[refx] = (ref[0], ref[1], ref[2] + chunk_shift)
+                chunk_shift += 4 # size of tAttrSkip
+            choose_rpn = []
+            choose_rpn.append(struct.pack("<BBH", ptgAttr, 0x04, nc)) # 0x04 is tAttrChoose
+            choose_rpn.append(struct.pack("<%dH" % (nc+1), *jump_pos))
+            for ic in range(nc):
+                choose_rpn.append(rpn_chunks[ic])
+                choose_rpn.append(struct.pack("<BBH", ptgAttr, 0x08, skiplens[ic])) # 0x08 is tAttrSkip
+            choose_rpn.append(struct.pack("<BBH", ptgFuncVarV, nc+1, 100)) # 100 is CHOOSE fn
+            self.rpn += b"".join(choose_rpn)
+        elif la1 and la1 in [LP]:
+            pass
+            self.match(LP)
+            self.expr(arg_type)
+            self.match(RP)
+            self.rpn += struct.pack("B", ptgParen)
+        else:
+            if (self.LA(1)==INT_CONST) and (_tokenSet_0.member(self.LA(2))):
+                pass
+                int_tok = self.LT(1)
+                self.match(INT_CONST)
+                # print "**int_const", int_tok.text
+                int_value = int(int_tok.text)
+                if int_value <= 65535:
+                    self.rpn += struct.pack("<BH", ptgInt, int_value)
+                else:
+                    self.rpn += struct.pack("<Bd", ptgNum, float(int_value))
+            elif (self.LA(1)==REF2D) and (_tokenSet_0.member(self.LA(2))):
+                pass
+                ref2d_tok = self.LT(1)
+                self.match(REF2D)
+                # print "**ref2d %s %s" % (ref2d_tok.text, arg_type)
+                r, c = Utils.cell_to_packed_rowcol(ref2d_tok.text)
+                ptg = ptgRefR + _RVAdeltaRef[arg_type]
+                self.rpn += struct.pack("<B2H", ptg, r, c)
+            elif (self.LA(1)==REF2D) and (self.LA(2)==COLON):
+                pass
+                ref2d1_tok = self.LT(1)
+                self.match(REF2D)
+                self.match(COLON)
+                ref2d2_tok = self.LT(1)
+                self.match(REF2D)
+                r1, c1 = Utils.cell_to_packed_rowcol(ref2d1_tok.text)
+                r2, c2 = Utils.cell_to_packed_rowcol(ref2d2_tok.text)
+                ptg = ptgAreaR + _RVAdeltaArea[arg_type]
+                self.rpn += struct.pack("<B4H", ptg, r1, r2, c1, c2)
+            elif (self.LA(1)==INT_CONST or self.LA(1)==NAME or self.LA(1)==QUOTENAME) and (self.LA(2)==COLON or self.LA(2)==BANG):
+                pass
+                sheet1=self.sheet()
+                sheet2 = sheet1
+                la1 = self.LA(1)
+                if False:
+                    pass
+                elif la1 and la1 in [COLON]:
+                    pass
+                    self.match(COLON)
+                    sheet2=self.sheet()
+                elif la1 and la1 in [BANG]:
+                    pass
+                else:
+                        raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+                self.match(BANG)
+                ref3d_ref2d = self.LT(1)
+                self.match(REF2D)
+                ptg = ptgRef3dR + _RVAdeltaRef[arg_type]
+                rpn_ref2d = b""
+                r1, c1 = Utils.cell_to_packed_rowcol(ref3d_ref2d.text)
+                rpn_ref2d = struct.pack("<3H", 0x0000, r1, c1)
+                la1 = self.LA(1)
+                if False:
+                    pass
+                elif la1 and la1 in [COLON]:
+                    pass
+                    self.match(COLON)
+                    ref3d_ref2d2 = self.LT(1)
+                    self.match(REF2D)
+                    ptg = ptgArea3dR + _RVAdeltaArea[arg_type]
+                    r2, c2 = Utils.cell_to_packed_rowcol(ref3d_ref2d2.text)
+                    rpn_ref2d = struct.pack("<5H", 0x0000, r1, r2, c1, c2)
+                elif la1 and la1 in [EOF,EQ,NE,GT,LT,GE,LE,ADD,SUB,MUL,DIV,POWER,PERCENT,RP,COMMA,SEMICOLON,CONCAT]:
+                    pass
+                else:
+                    raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+                self.rpn += struct.pack("<B", ptg)
+                self.sheet_references.append((sheet1, sheet2, len(self.rpn)))
+                self.rpn += rpn_ref2d
+            elif (self.LA(1)==NAME) and (_tokenSet_0.member(self.LA(2))):
+                name_tok = self.LT(1)
+                self.match(NAME)
+                raise Exception("[formula] found unexpected NAME token (%r)" % name_tok.txt)
+                # #### TODO: handle references to defined names here
+            elif (self.LA(1)==NAME) and (self.LA(2)==LP):
+                func_tok = self.LT(1)
+                self.match(NAME)
+                func_toku = func_tok.text.upper()
+                if func_toku in all_funcs_by_name:
+                    (opcode,
+                    min_argc,
+                    max_argc,
+                    func_type,
+                    arg_type_str) = all_funcs_by_name[func_toku]
+                    arg_type_list = list(arg_type_str)
+                else:
+                    raise Exception("[formula] unknown function (%s)" % func_tok.text)
+                # print "**func_tok1 %s %s" % (func_toku, func_type)
+                xcall = opcode < 0
+                if xcall:
+                    # The name of the add-in function is passed as the 1st arg
+                    # of the hidden XCALL function
+                    self.xcall_references.append((func_toku, len(self.rpn) + 1))
+                    self.rpn += struct.pack("<BHHH",
+                        ptgNameXR,
+                        0xadde, # ##PATCHME## index to REF entry in EXTERNSHEET record
+                        0xefbe, # ##PATCHME## one-based index to EXTERNNAME record
+                        0x0000) # unused
+                self.match(LP)
+                arg_count=self.expr_list(arg_type_list, min_argc, max_argc)
+                self.match(RP)
+                if arg_count > max_argc or arg_count < min_argc:
+                    raise Exception("%d parameters for function: %s" % (arg_count, func_tok.text))
+                if xcall:
+                    func_ptg = ptgFuncVarR + _RVAdelta[func_type]
+                    self.rpn += struct.pack("<2BH", func_ptg, arg_count + 1, 255) # 255 is magic XCALL function
+                elif min_argc == max_argc:
+                    func_ptg = ptgFuncR + _RVAdelta[func_type]
+                    self.rpn += struct.pack("<BH", func_ptg, opcode)
+                elif arg_count == 1 and func_tok.text.upper() == "SUM":
+                    self.rpn += struct.pack("<BBH", ptgAttr, 0x10, 0) # tAttrSum
+                else:
+                    func_ptg = ptgFuncVarR + _RVAdelta[func_type]
+                    self.rpn += struct.pack("<2BH", func_ptg, arg_count, opcode)
+            else:
+                raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+    def sheet(self):
+        ref = None
+        sheet_ref_name = None
+        sheet_ref_int = None
+        sheet_ref_quote = None
+        la1 = self.LA(1)
+        if False:
+            pass
+        elif la1 and la1 in [NAME]:
+            sheet_ref_name = self.LT(1)
+            self.match(NAME)
+            ref = sheet_ref_name.text
+        elif la1 and la1 in [INT_CONST]:
+            sheet_ref_int = self.LT(1)
+            self.match(INT_CONST)
+            ref = sheet_ref_int.text
+        elif la1 and la1 in [QUOTENAME]:
+            sheet_ref_quote = self.LT(1)
+            self.match(QUOTENAME)
+            ref = sheet_ref_quote.text[1:-1].replace("''", "'")
+        else:
+                raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+        return ref
+
+    def expr_list(self,
+        arg_type_list, min_argc, max_argc
+    ):
+        arg_cnt = None
+
+        arg_cnt = 0
+        arg_type = arg_type_list[arg_cnt]
+        # print "**expr_list1[%d] req=%s" % (arg_cnt, arg_type)
+        la1 = self.LA(1)
+        if False:
+            pass
+        elif la1 and la1 in [TRUE_CONST,FALSE_CONST,STR_CONST,NUM_CONST,INT_CONST,FUNC_IF,FUNC_CHOOSE,NAME,QUOTENAME,SUB,LP,REF2D]:
+            pass
+            self.expr(arg_type)
+            arg_cnt += 1
+            while True:
+                if (self.LA(1)==COMMA or self.LA(1)==SEMICOLON):
+                    pass
+                    if arg_cnt < len(arg_type_list):
+                        arg_type = arg_type_list[arg_cnt]
+                    else:
+                        arg_type = arg_type_list[-1]
+                    if arg_type == "+":
+                        arg_type = arg_type_list[-2]
+                    # print "**expr_list2[%d] req=%s" % (arg_cnt, arg_type)
+                    la1 = self.LA(1)
+                    if False:
+                        pass
+                    elif la1 and la1 in [SEMICOLON]:
+                        pass
+                        self.match(SEMICOLON)
+                    elif la1 and la1 in [COMMA]:
+                        pass
+                        self.match(COMMA)
+                    else:
+                        raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+                    la1 = self.LA(1)
+                    if False:
+                        pass
+                    elif la1 and la1 in [TRUE_CONST,FALSE_CONST,STR_CONST,NUM_CONST,INT_CONST,FUNC_IF,FUNC_CHOOSE,NAME,QUOTENAME,SUB,LP,REF2D]:
+                        pass
+                        self.expr(arg_type)
+                    elif la1 and la1 in [RP,COMMA,SEMICOLON]:
+                        pass
+                        self.rpn += struct.pack("B", ptgMissArg)
+                    else:
+                        raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+                    arg_cnt += 1
+                else:
+                    break
+
+        elif la1 and la1 in [RP]:
+            pass
+        else:
+            raise antlr.NoViableAltException(self.LT(1), self.getFilename())
+
+        return arg_cnt
+
+
+_tokenNames = [
+    "<0>",
+    "EOF",
+    "<2>",
+    "NULL_TREE_LOOKAHEAD",
+    "TRUE_CONST",
+    "FALSE_CONST",
+    "STR_CONST",
+    "NUM_CONST",
+    "INT_CONST",
+    "FUNC_IF",
+    "FUNC_CHOOSE",
+    "NAME",
+    "QUOTENAME",
+    "EQ",
+    "NE",
+    "GT",
+    "LT",
+    "GE",
+    "LE",
+    "ADD",
+    "SUB",
+    "MUL",
+    "DIV",
+    "POWER",
+    "PERCENT",
+    "LP",
+    "RP",
+    "LB",
+    "RB",
+    "COLON",
+    "COMMA",
+    "SEMICOLON",
+    "REF2D",
+    "REF2D_R1C1",
+    "BANG",
+    "CONCAT"
+]
+
+
+### generate bit set
+def mk_tokenSet_0():
+    ### var1
+    data = [ 37681618946, 0]
+    return data
+_tokenSet_0 = antlr.BitSet(mk_tokenSet_0())
+
diff --git a/tablib/packages/xlwt3/ExcelMagic.py b/tablib/packages/xlwt3/ExcelMagic.py
new file mode 100644
index 0000000..90372b4
--- /dev/null
+++ b/tablib/packages/xlwt3/ExcelMagic.py
@@ -0,0 +1,859 @@
+""" lots of Excel Magic Numbers """
+
+# Boundaries BIFF8+
+
+MAX_ROW = 65536
+MAX_COL = 256
+
+
+biff_records = {
+    0x0000: "DIMENSIONS",
+    0x0001: "BLANK",
+    0x0002: "INTEGER",
+    0x0003: "NUMBER",
+    0x0004: "LABEL",
+    0x0005: "BOOLERR",
+    0x0006: "FORMULA",
+    0x0007: "STRING",
+    0x0008: "ROW",
+    0x0009: "BOF",
+    0x000A: "EOF",
+    0x000B: "INDEX",
+    0x000C: "CALCCOUNT",
+    0x000D: "CALCMODE",
+    0x000E: "PRECISION",
+    0x000F: "REFMODE",
+    0x0010: "DELTA",
+    0x0011: "ITERATION",
+    0x0012: "PROTECT",
+    0x0013: "PASSWORD",
+    0x0014: "HEADER",
+    0x0015: "FOOTER",
+    0x0016: "EXTERNCOUNT",
+    0x0017: "EXTERNSHEET",
+    0x0018: "NAME",
+    0x0019: "WINDOWPROTECT",
+    0x001A: "VERTICALPAGEBREAKS",
+    0x001B: "HORIZONTALPAGEBREAKS",
+    0x001C: "NOTE",
+    0x001D: "SELECTION",
+    0x001E: "FORMAT",
+    0x001F: "FORMATCOUNT",
+    0x0020: "COLUMNDEFAULT",
+    0x0021: "ARRAY",
+    0x0022: "1904",
+    0x0023: "EXTERNNAME",
+    0x0024: "COLWIDTH",
+    0x0025: "DEFAULTROWHEIGHT",
+    0x0026: "LEFTMARGIN",
+    0x0027: "RIGHTMARGIN",
+    0x0028: "TOPMARGIN",
+    0x0029: "BOTTOMMARGIN",
+    0x002A: "PRINTHEADERS",
+    0x002B: "PRINTGRIDLINES",
+    0x002F: "FILEPASS",
+    0x0031: "FONT",
+    0x0036: "TABLE",
+    0x003C: "CONTINUE",
+    0x003D: "WINDOW1",
+    0x003E: "WINDOW2",
+    0x0040: "BACKUP",
+    0x0041: "PANE",
+    0x0042: "CODEPAGE",
+    0x0043: "XF",
+    0x0044: "IXFE",
+    0x0045: "EFONT",
+    0x004D: "PLS",
+    0x0050: "DCON",
+    0x0051: "DCONREF",
+    0x0053: "DCONNAME",
+    0x0055: "DEFCOLWIDTH",
+    0x0056: "BUILTINFMTCNT",
+    0x0059: "XCT",
+    0x005A: "CRN",
+    0x005B: "FILESHARING",
+    0x005C: "WRITEACCESS",
+    0x005D: "OBJ",
+    0x005E: "UNCALCED",
+    0x005F: "SAFERECALC",
+    0x0060: "TEMPLATE",
+    0x0063: "OBJPROTECT",
+    0x007D: "COLINFO",
+    0x007E: "RK",
+    0x007F: "IMDATA",
+    0x0080: "GUTS",
+    0x0081: "WSBOOL",
+    0x0082: "GRIDSET",
+    0x0083: "HCENTER",
+    0x0084: "VCENTER",
+    0x0085: "BOUNDSHEET",
+    0x0086: "WRITEPROT",
+    0x0087: "ADDIN",
+    0x0088: "EDG",
+    0x0089: "PUB",
+    0x008C: "COUNTRY",
+    0x008D: "HIDEOBJ",
+    0x008E: "BUNDLESOFFSET",
+    0x008F: "BUNDLEHEADER",
+    0x0090: "SORT",
+    0x0091: "SUB",
+    0x0092: "PALETTE",
+    0x0093: "STYLE",
+    0x0094: "LHRECORD",
+    0x0095: "LHNGRAPH",
+    0x0096: "SOUND",
+    0x0098: "LPR",
+    0x0099: "STANDARDWIDTH",
+    0x009A: "FNGROUPNAME",
+    0x009B: "FILTERMODE",
+    0x009C: "FNGROUPCOUNT",
+    0x009D: "AUTOFILTERINFO",
+    0x009E: "AUTOFILTER",
+    0x00A0: "SCL",
+    0x00A1: "SETUP",
+    0x00A9: "COORDLIST",
+    0x00AB: "GCW",
+    0x00AE: "SCENMAN",
+    0x00AF: "SCENARIO",
+    0x00B0: "SXVIEW",
+    0x00B1: "SXVD",
+    0x00B2: "SXVI",
+    0x00B4: "SXIVD",
+    0x00B5: "SXLI",
+    0x00B6: "SXPI",
+    0x00B8: "DOCROUTE",
+    0x00B9: "RECIPNAME",
+    0x00BC: "SHRFMLA",
+    0x00BD: "MULRK",
+    0x00BE: "MULBLANK",
+    0x00C1: "MMS",
+    0x00C2: "ADDMENU",
+    0x00C3: "DELMENU",
+    0x00C5: "SXDI",
+    0x00C6: "SXDB",
+    0x00C7: "SXFIELD",
+    0x00C8: "SXINDEXLIST",
+    0x00C9: "SXDOUBLE",
+    0x00CD: "SXSTRING",
+    0x00CE: "SXDATETIME",
+    0x00D0: "SXTBL",
+    0x00D1: "SXTBRGITEM",
+    0x00D2: "SXTBPG",
+    0x00D3: "OBPROJ",
+    0x00D5: "SXIDSTM",
+    0x00D6: "RSTRING",
+    0x00D7: "DBCELL",
+    0x00DA: "BOOKBOOL",
+    0x00DC: "SXEXT|PARAMQRY",
+    0x00DD: "SCENPROTECT",
+    0x00DE: "OLESIZE",
+    0x00DF: "UDDESC",
+    0x00E0: "XF",
+    0x00E1: "INTERFACEHDR",
+    0x00E2: "INTERFACEEND",
+    0x00E3: "SXVS",
+    0x00E5: "MERGEDCELLS",
+    0x00E9: "BITMAP",
+    0x00EB: "MSODRAWINGGROUP",
+    0x00EC: "MSODRAWING",
+    0x00ED: "MSODRAWINGSELECTION",
+    0x00F0: "SXRULE",
+    0x00F1: "SXEX",
+    0x00F2: "SXFILT",
+    0x00F6: "SXNAME",
+    0x00F7: "SXSELECT",
+    0x00F8: "SXPAIR",
+    0x00F9: "SXFMLA",
+    0x00FB: "SXFORMAT",
+    0x00FC: "SST",
+    0x00FD: "LABELSST",
+    0x00FF: "EXTSST",
+    0x0100: "SXVDEX",
+    0x0103: "SXFORMULA",
+    0x0122: "SXDBEX",
+    0x0137: "CHTRINSERT",
+    0x0138: "CHTRINFO",
+    0x013B: "CHTRCELLCONTENT",
+    0x013D: "TABID",
+    0x0140: "CHTRMOVERANGE",
+    0x014D: "CHTRINSERTTAB",
+    0x015F: "LABELRANGES",
+    0x0160: "USESELFS",
+    0x0161: "DSF",
+    0x0162: "XL5MODIFY",
+    0x0196: "CHTRHEADER",
+    0x01A9: "USERBVIEW",
+    0x01AA: "USERSVIEWBEGIN",
+    0x01AB: "USERSVIEWEND",
+    0x01AD: "QSI",
+    0x01AE: "SUPBOOK",
+    0x01AF: "PROT4REV",
+    0x01B0: "CONDFMT",
+    0x01B1: "CF",
+    0x01B2: "DVAL",
+    0x01B5: "DCONBIN",
+    0x01B6: "TXO",
+    0x01B7: "REFRESHALL",
+    0x01B8: "HLINK",
+    0x01BA: "CODENAME",
+    0x01BB: "SXFDBTYPE",
+    0x01BC: "PROT4REVPASS",
+    0x01BE: "DV",
+    0x01C0: "XL9FILE",
+    0x01C1: "RECALCID",
+    0x0200: "DIMENSIONS",
+    0x0201: "BLANK",
+    0x0203: "NUMBER",
+    0x0204: "LABEL",
+    0x0205: "BOOLERR",
+    0x0206: "FORMULA",
+    0x0207: "STRING",
+    0x0208: "ROW",
+    0x0209: "BOF",
+    0x020B: "INDEX",
+    0x0218: "NAME",
+    0x0221: "ARRAY",
+    0x0223: "EXTERNNAME",
+    0x0225: "DEFAULTROWHEIGHT",
+    0x0231: "FONT",
+    0x0236: "TABLE",
+    0x023E: "WINDOW2",
+    0x0243: "XF",
+    0x027E: "RK",
+    0x0293: "STYLE",
+    0x0406: "FORMULA",
+    0x0409: "BOF",
+    0x041E: "FORMAT",
+    0x0443: "XF",
+    0x04BC: "SHRFMLA",
+    0x0800: "SCREENTIP",
+    0x0803: "WEBQRYSETTINGS",
+    0x0804: "WEBQRYTABLES",
+    0x0809: "BOF",
+    0x0862: "SHEETLAYOUT",
+    0x0867: "SHEETPROTECTION",
+    0x1001: "UNITS",
+    0x1002: "ChartChart",
+    0x1003: "ChartSeries",
+    0x1006: "ChartDataformat",
+    0x1007: "ChartLineformat",
+    0x1009: "ChartMarkerformat",
+    0x100A: "ChartAreaformat",
+    0x100B: "ChartPieformat",
+    0x100C: "ChartAttachedlabel",
+    0x100D: "ChartSeriestext",
+    0x1014: "ChartChartformat",
+    0x1015: "ChartLegend",
+    0x1016: "ChartSerieslist",
+    0x1017: "ChartBar",
+    0x1018: "ChartLine",
+    0x1019: "ChartPie",
+    0x101A: "ChartArea",
+    0x101B: "ChartScatter",
+    0x101C: "ChartChartline",
+    0x101D: "ChartAxis",
+    0x101E: "ChartTick",
+    0x101F: "ChartValuerange",
+    0x1020: "ChartCatserrange",
+    0x1021: "ChartAxislineformat",
+    0x1022: "ChartFormatlink",
+    0x1024: "ChartDefaulttext",
+    0x1025: "ChartText",
+    0x1026: "ChartFontx",
+    0x1027: "ChartObjectLink",
+    0x1032: "ChartFrame",
+    0x1033: "BEGIN",
+    0x1034: "END",
+    0x1035: "ChartPlotarea",
+    0x103A: "Chart3D",
+    0x103C: "ChartPicf",
+    0x103D: "ChartDropbar",
+    0x103E: "ChartRadar",
+    0x103F: "ChartSurface",
+    0x1040: "ChartRadararea",
+    0x1041: "ChartAxisparent",
+    0x1043: "ChartLegendxn",
+    0x1044: "ChartShtprops",
+    0x1045: "ChartSertocrt",
+    0x1046: "ChartAxesused",
+    0x1048: "ChartSbaseref",
+    0x104A: "ChartSerparent",
+    0x104B: "ChartSerauxtrend",
+    0x104E: "ChartIfmt",
+    0x104F: "ChartPos",
+    0x1050: "ChartAlruns",
+    0x1051: "ChartAI",
+    0x105B: "ChartSerauxerrbar",
+    0x105D: "ChartSerfmt",
+    0x105F: "Chart3DDataFormat",
+    0x1060: "ChartFbi",
+    0x1061: "ChartBoppop",
+    0x1062: "ChartAxcext",
+    0x1063: "ChartDat",
+    0x1064: "ChartPlotgrowth",
+    0x1065: "ChartSiindex",
+    0x1066: "ChartGelframe",
+    0x1067: "ChartBoppcustom",
+    0xFFFF: ""
+}
+
+
+all_funcs_by_name = {
+    # Includes Analysis ToolPak aka ATP aka add-in aka xcall functions,
+    # distinguished by -ve opcode.
+    # name: (opcode, min # args, max # args, func return type, func arg types)
+    # + in func arg types means more of the same.
+    'ABS'         : ( 24, 1,  1, 'V', 'V'),
+    'ACCRINT'     : ( -1, 6,  7, 'V', 'VVVVVVV'),
+    'ACCRINTM'    : ( -1, 3,  5, 'V', 'VVVVV'),
+    'ACOS'        : ( 99, 1,  1, 'V', 'V'),
+    'ACOSH'       : (233, 1,  1, 'V', 'V'),
+    'ADDRESS'     : (219, 2,  5, 'V', 'VVVVV'),
+    'AMORDEGRC'   : ( -1, 7,  7, 'V', 'VVVVVVV'),
+    'AMORLINC'    : ( -1, 7,  7, 'V', 'VVVVVVV'),
+    'AND'         : ( 36, 1, 30, 'V', 'D+'),
+    'AREAS'       : ( 75, 1,  1, 'V', 'R'),
+    'ASC'         : (214, 1,  1, 'V', 'V'),
+    'ASIN'        : ( 98, 1,  1, 'V', 'V'),
+    'ASINH'       : (232, 1,  1, 'V', 'V'),
+    'ATAN'        : ( 18, 1,  1, 'V', 'V'),
+    'ATAN2'       : ( 97, 2,  2, 'V', 'VV'),
+    'ATANH'       : (234, 1,  1, 'V', 'V'),
+    'AVEDEV'      : (269, 1, 30, 'V', 'D+'),
+    'AVERAGE'     : (  5, 1, 30, 'V', 'D+'),
+    'AVERAGEA'    : (361, 1, 30, 'V', 'D+'),
+    'BAHTTEXT'    : (368, 1,  1, 'V', 'V'),
+    'BESSELI'     : ( -1, 2,  2, 'V', 'VV'),
+    'BESSELJ'     : ( -1, 2,  2, 'V', 'VV'),
+    'BESSELK'     : ( -1, 2,  2, 'V', 'VV'),
+    'BESSELY'     : ( -1, 2,  2, 'V', 'VV'),
+    'BETADIST'    : (270, 3,  5, 'V', 'VVVVV'),
+    'BETAINV'     : (272, 3,  5, 'V', 'VVVVV'),
+    'BIN2DEC'     : ( -1, 1,  1, 'V', 'V'),
+    'BIN2HEX'     : ( -1, 1,  2, 'V', 'VV'),
+    'BIN2OCT'     : ( -1, 1,  2, 'V', 'VV'),
+    'BINOMDIST'   : (273, 4,  4, 'V', 'VVVV'),
+    'CEILING'     : (288, 2,  2, 'V', 'VV'),
+    'CELL'        : (125, 1,  2, 'V', 'VR'),
+    'CHAR'        : (111, 1,  1, 'V', 'V'),
+    'CHIDIST'     : (274, 2,  2, 'V', 'VV'),
+    'CHIINV'      : (275, 2,  2, 'V', 'VV'),
+    'CHITEST'     : (306, 2,  2, 'V', 'AA'),
+    'CHOOSE'      : (100, 2, 30, 'R', 'VR+'),
+    'CLEAN'       : (162, 1,  1, 'V', 'V'),
+    'CODE'        : (121, 1,  1, 'V', 'V'),
+    'COLUMN'      : (  9, 0,  1, 'V', 'R'),
+    'COLUMNS'     : ( 77, 1,  1, 'V', 'R'),
+    'COMBIN'      : (276, 2,  2, 'V', 'VV'),
+    'COMPLEX'     : ( -1, 2,  3, 'V', 'VVV'),
+    'CONCATENATE' : (336, 1, 30, 'V', 'V+'),
+    'CONFIDENCE'  : (277, 3,  3, 'V', 'VVV'),
+    'CONVERT'     : ( -1, 3,  3, 'V', 'VVV'),
+    'CORREL'      : (307, 2,  2, 'V', 'AA'),
+    'COS'         : ( 16, 1,  1, 'V', 'V'),
+    'COSH'        : (230, 1,  1, 'V', 'V'),
+    'COUNT'       : (  0, 1, 30, 'V', 'D+'),
+    'COUNTA'      : (169, 1, 30, 'V', 'D+'),
+    'COUNTBLANK'  : (347, 1,  1, 'V', 'R'),
+    'COUNTIF'     : (346, 2,  2, 'V', 'RV'),
+    'COUPDAYBS'   : ( -1, 3,  5, 'V', 'VVVVV'),
+    'COUPDAYS'    : ( -1, 3,  5, 'V', 'VVVVV'),
+    'COUPDAYSNC'  : ( -1, 3,  5, 'V', 'VVVVV'),
+    'COUPNCD'     : ( -1, 3,  5, 'V', 'VVVVV'),
+    'COUPNUM'     : ( -1, 3,  5, 'V', 'VVVVV'),
+    'COUPPCD'     : ( -1, 3,  5, 'V', 'VVVVV'),
+    'COVAR'       : (308, 2,  2, 'V', 'AA'),
+    'CRITBINOM'   : (278, 3,  3, 'V', 'VVV'),
+    'CUMIPMT'     : ( -1, 6,  6, 'V', 'VVVVVV'),
+    'CUMPRINC'    : ( -1, 6,  6, 'V', 'VVVVVV'),
+    'DATE'        : ( 65, 3,  3, 'V', 'VVV'),
+    'DATEDIF'     : (351, 3,  3, 'V', 'VVV'),
+    'DATEVALUE'   : (140, 1,  1, 'V', 'V'),
+    'DAVERAGE'    : ( 42, 3,  3, 'V', 'RRR'),
+    'DAY'         : ( 67, 1,  1, 'V', 'V'),
+    'DAYS360'     : (220, 2,  3, 'V', 'VVV'),
+    'DB'          : (247, 4,  5, 'V', 'VVVVV'),
+    'DBCS'        : (215, 1,  1, 'V', 'V'),
+    'DCOUNT'      : ( 40, 3,  3, 'V', 'RRR'),
+    'DCOUNTA'     : (199, 3,  3, 'V', 'RRR'),
+    'DDB'         : (144, 4,  5, 'V', 'VVVVV'),
+    'DEC2BIN'     : ( -1, 1,  2, 'V', 'VV'),
+    'DEC2HEX'     : ( -1, 1,  2, 'V', 'VV'),
+    'DEC2OCT'     : ( -1, 1,  2, 'V', 'VV'),
+    'DEGREES'     : (343, 1,  1, 'V', 'V'),
+    'DELTA'       : ( -1, 1,  2, 'V', 'VV'),
+    'DEVSQ'       : (318, 1, 30, 'V', 'D+'),
+    'DGET'        : (235, 3,  3, 'V', 'RRR'),
+    'DISC'        : ( -1, 4,  5, 'V', 'VVVVV'),
+    'DMAX'        : ( 44, 3,  3, 'V', 'RRR'),
+    'DMIN'        : ( 43, 3,  3, 'V', 'RRR'),
+    'DOLLAR'      : ( 13, 1,  2, 'V', 'VV'),
+    'DOLLARDE'    : ( -1, 2,  2, 'V', 'VV'),
+    'DOLLARFR'    : ( -1, 2,  2, 'V', 'VV'),
+    'DPRODUCT'    : (189, 3,  3, 'V', 'RRR'),
+    'DSTDEV'      : ( 45, 3,  3, 'V', 'RRR'),
+    'DSTDEVP'     : (195, 3,  3, 'V', 'RRR'),
+    'DSUM'        : ( 41, 3,  3, 'V', 'RRR'),
+    'DURATION'    : ( -1, 5,  6, 'V', 'VVVVVV'),
+    'DVAR'        : ( 47, 3,  3, 'V', 'RRR'),
+    'DVARP'       : (196, 3,  3, 'V', 'RRR'),
+    'EDATE'       : ( -1, 2,  2, 'V', 'VV'),
+    'EFFECT'      : ( -1, 2,  2, 'V', 'VV'),
+    'EOMONTH'     : ( -1, 1,  2, 'V', 'VV'),
+    'ERF'         : ( -1, 1,  2, 'V', 'VV'),
+    'ERFC'        : ( -1, 1,  1, 'V', 'V'),
+    'ERROR.TYPE'  : (261, 1,  1, 'V', 'V'),
+    'EVEN'        : (279, 1,  1, 'V', 'V'),
+    'EXACT'       : (117, 2,  2, 'V', 'VV'),
+    'EXP'         : ( 21, 1,  1, 'V', 'V'),
+    'EXPONDIST'   : (280, 3,  3, 'V', 'VVV'),
+    'FACT'        : (184, 1,  1, 'V', 'V'),
+    'FACTDOUBLE'  : ( -1, 1,  1, 'V', 'V'),
+    'FALSE'       : ( 35, 0,  0, 'V', '-'),
+    'FDIST'       : (281, 3,  3, 'V', 'VVV'),
+    'FIND'        : (124, 2,  3, 'V', 'VVV'),
+    'FINDB'       : (205, 2,  3, 'V', 'VVV'),
+    'FINV'        : (282, 3,  3, 'V', 'VVV'),
+    'FISHER'      : (283, 1,  1, 'V', 'V'),
+    'FISHERINV'   : (284, 1,  1, 'V', 'V'),
+    'FIXED'       : ( 14, 2,  3, 'V', 'VVV'),
+    'FLOOR'       : (285, 2,  2, 'V', 'VV'),
+    'FORECAST'    : (309, 3,  3, 'V', 'VAA'),
+    'FREQUENCY'   : (252, 2,  2, 'A', 'RR'),
+    'FTEST'       : (310, 2,  2, 'V', 'AA'),
+    'FV'          : ( 57, 3,  5, 'V', 'VVVVV'),
+    'FVSCHEDULE'  : ( -1, 2,  2, 'V', 'VA'),
+    'GAMMADIST'   : (286, 4,  4, 'V', 'VVVV'),
+    'GAMMAINV'    : (287, 3,  3, 'V', 'VVV'),
+    'GAMMALN'     : (271, 1,  1, 'V', 'V'),
+    'GCD'         : ( -1, 1, 29, 'V', 'V+'),
+    'GEOMEAN'     : (319, 1, 30, 'V', 'D+'),
+    'GESTEP'      : ( -1, 1,  2, 'V', 'VV'),
+    'GETPIVOTDATA': (358, 2, 30, 'A', 'VAV+'),
+    'GROWTH'      : ( 52, 1,  4, 'A', 'RRRV'),
+    'HARMEAN'     : (320, 1, 30, 'V', 'D+'),
+    'HEX2BIN'     : ( -1, 1,  2, 'V', 'VV'),
+    'HEX2DEC'     : ( -1, 1,  1, 'V', 'V'),
+    'HEX2OCT'     : ( -1, 1,  2, 'V', 'VV'),
+    'HLOOKUP'     : (101, 3,  4, 'V', 'VRRV'),
+    'HOUR'        : ( 71, 1,  1, 'V', 'V'),
+    'HYPERLINK'   : (359, 1,  2, 'V', 'VV'),
+    'HYPGEOMDIST' : (289, 4,  4, 'V', 'VVVV'),
+    'IF'          : (  1, 2,  3, 'R', 'VRR'),
+    'IMABS'       : ( -1, 1,  1, 'V', 'V'),
+    'IMAGINARY'   : ( -1, 1,  1, 'V', 'V'),
+    'IMARGUMENT'  : ( -1, 1,  1, 'V', 'V'),
+    'IMCONJUGATE' : ( -1, 1,  1, 'V', 'V'),
+    'IMCOS'       : ( -1, 1,  1, 'V', 'V'),
+    'IMDIV'       : ( -1, 2,  2, 'V', 'VV'),
+    'IMEXP'       : ( -1, 1,  1, 'V', 'V'),
+    'IMLN'        : ( -1, 1,  1, 'V', 'V'),
+    'IMLOG10'     : ( -1, 1,  1, 'V', 'V'),
+    'IMLOG2'      : ( -1, 1,  1, 'V', 'V'),
+    'IMPOWER'     : ( -1, 2,  2, 'V', 'VV'),
+    'IMPRODUCT'   : ( -1, 2,  2, 'V', 'VV'),
+    'IMREAL'      : ( -1, 1,  1, 'V', 'V'),
+    'IMSIN'       : ( -1, 1,  1, 'V', 'V'),
+    'IMSQRT'      : ( -1, 1,  1, 'V', 'V'),
+    'IMSUB'       : ( -1, 2,  2, 'V', 'VV'),
+    'IMSUM'       : ( -1, 1, 29, 'V', 'V+'),
+    'INDEX'       : ( 29, 2,  4, 'R', 'RVVV'),
+    'INDIRECT'    : (148, 1,  2, 'R', 'VV'),
+    'INFO'        : (244, 1,  1, 'V', 'V'),
+    'INT'         : ( 25, 1,  1, 'V', 'V'),
+    'INTERCEPT'   : (311, 2,  2, 'V', 'AA'),
+    'INTRATE'     : ( -1, 4,  5, 'V', 'VVVVV'),
+    'IPMT'        : (167, 4,  6, 'V', 'VVVVVV'),
+    'IRR'         : ( 62, 1,  2, 'V', 'RV'),
+    'ISBLANK'     : (129, 1,  1, 'V', 'V'),
+    'ISERR'       : (126, 1,  1, 'V', 'V'),
+    'ISERROR'     : (  3, 1,  1, 'V', 'V'),
+    'ISEVEN'      : ( -1, 1,  1, 'V', 'V'),
+    'ISLOGICAL'   : (198, 1,  1, 'V', 'V'),
+    'ISNA'        : (  2, 1,  1, 'V', 'V'),
+    'ISNONTEXT'   : (190, 1,  1, 'V', 'V'),
+    'ISNUMBER'    : (128, 1,  1, 'V', 'V'),
+    'ISODD'       : ( -1, 1,  1, 'V', 'V'),
+    'ISPMT'       : (350, 4,  4, 'V', 'VVVV'),
+    'ISREF'       : (105, 1,  1, 'V', 'R'),
+    'ISTEXT'      : (127, 1,  1, 'V', 'V'),
+    'KURT'        : (322, 1, 30, 'V', 'D+'),
+    'LARGE'       : (325, 2,  2, 'V', 'RV'),
+    'LCM'         : ( -1, 1, 29, 'V', 'V+'),
+    'LEFT'        : (115, 1,  2, 'V', 'VV'),
+    'LEFTB'       : (208, 1,  2, 'V', 'VV'),
+    'LEN'         : ( 32, 1,  1, 'V', 'V'),
+    'LENB'        : (211, 1,  1, 'V', 'V'),
+    'LINEST'      : ( 49, 1,  4, 'A', 'RRVV'),
+    'LN'          : ( 22, 1,  1, 'V', 'V'),
+    'LOG'         : (109, 1,  2, 'V', 'VV'),
+    'LOG10'       : ( 23, 1,  1, 'V', 'V'),
+    'LOGEST'      : ( 51, 1,  4, 'A', 'RRVV'),
+    'LOGINV'      : (291, 3,  3, 'V', 'VVV'),
+    'LOGNORMDIST' : (290, 3,  3, 'V', 'VVV'),
+    'LOOKUP'      : ( 28, 2,  3, 'V', 'VRR'),
+    'LOWER'       : (112, 1,  1, 'V', 'V'),
+    'MATCH'       : ( 64, 2,  3, 'V', 'VRR'),
+    'MAX'         : (  7, 1, 30, 'V', 'D+'),
+    'MAXA'        : (362, 1, 30, 'V', 'D+'),
+    'MDETERM'     : (163, 1,  1, 'V', 'A'),
+    'MDURATION'   : ( -1, 5,  6, 'V', 'VVVVVV'),
+    'MEDIAN'      : (227, 1, 30, 'V', 'D+'),
+    'MID'         : ( 31, 3,  3, 'V', 'VVV'),
+    'MIDB'        : (210, 3,  3, 'V', 'VVV'),
+    'MIN'         : (  6, 1, 30, 'V', 'D+'),
+    'MINA'        : (363, 1, 30, 'V', 'D+'),
+    'MINUTE'      : ( 72, 1,  1, 'V', 'V'),
+    'MINVERSE'    : (164, 1,  1, 'A', 'A'),
+    'MIRR'        : ( 61, 3,  3, 'V', 'RVV'),
+    'MMULT'       : (165, 2,  2, 'A', 'AA'),
+    'MOD'         : ( 39, 2,  2, 'V', 'VV'),
+    'MODE'        : (330, 1, 30, 'V', 'A+'), ################ weird #################
+    'MONTH'       : ( 68, 1,  1, 'V', 'V'),
+    'MROUND'      : ( -1, 2,  2, 'V', 'VV'),
+    'MULTINOMIAL' : ( -1, 1, 29, 'V', 'V+'),
+    'N'           : (131, 1,  1, 'V', 'R'),
+    'NA'          : ( 10, 0,  0, 'V', '-'),
+    'NEGBINOMDIST': (292, 3,  3, 'V', 'VVV'),
+    'NETWORKDAYS' : ( -1, 2,  3, 'V', 'VVR'),
+    'NOMINAL'     : ( -1, 2,  2, 'V', 'VV'),
+    'NORMDIST'    : (293, 4,  4, 'V', 'VVVV'),
+    'NORMINV'     : (295, 3,  3, 'V', 'VVV'),
+    'NORMSDIST'   : (294, 1,  1, 'V', 'V'),
+    'NORMSINV'    : (296, 1,  1, 'V', 'V'),
+    'NOT'         : ( 38, 1,  1, 'V', 'V'),
+    'NOW'         : ( 74, 0,  0, 'V', '-'),
+    'NPER'        : ( 58, 3,  5, 'V', 'VVVVV'),
+    'NPV'         : ( 11, 2, 30, 'V', 'VD+'),
+    'OCT2BIN'     : ( -1, 1,  2, 'V', 'VV'),
+    'OCT2DEC'     : ( -1, 1,  1, 'V', 'V'),
+    'OCT2HEX'     : ( -1, 1,  2, 'V', 'VV'),
+    'ODD'         : (298, 1,  1, 'V', 'V'),
+    'ODDFPRICE'   : ( -1, 9,  9, 'V', 'VVVVVVVVV'),
+    'ODDFYIELD'   : ( -1, 9,  9, 'V', 'VVVVVVVVV'),
+    'ODDLPRICE'   : ( -1, 8,  8, 'V', 'VVVVVVVV'),
+    'ODDLYIELD'   : ( -1, 8,  8, 'V', 'VVVVVVVV'),
+    'OFFSET'      : ( 78, 3,  5, 'R', 'RVVVV'),
+    'OR'          : ( 37, 1, 30, 'V', 'D+'),
+    'PEARSON'     : (312, 2,  2, 'V', 'AA'),
+    'PERCENTILE'  : (328, 2,  2, 'V', 'RV'),
+    'PERCENTRANK' : (329, 2,  3, 'V', 'RVV'),
+    'PERMUT'      : (299, 2,  2, 'V', 'VV'),
+    'PHONETIC'    : (360, 1,  1, 'V', 'R'),
+    'PI'          : ( 19, 0,  0, 'V', '-'),
+    'PMT'         : ( 59, 3,  5, 'V', 'VVVVV'),
+    'POISSON'     : (300, 3,  3, 'V', 'VVV'),
+    'POWER'       : (337, 2,  2, 'V', 'VV'),
+    'PPMT'        : (168, 4,  6, 'V', 'VVVVVV'),
+    'PRICE'       : ( -1, 6,  7, 'V', 'VVVVVVV'),
+    'PRICEDISC'   : ( -1, 4,  5, 'V', 'VVVVV'),
+    'PRICEMAT'    : ( -1, 5,  6, 'V', 'VVVVVV'),
+    'PROB'        : (317, 3,  4, 'V', 'AAVV'),
+    'PRODUCT'     : (183, 1, 30, 'V', 'D+'),
+    'PROPER'      : (114, 1,  1, 'V', 'V'),
+    'PV'          : ( 56, 3,  5, 'V', 'VVVVV'),
+    'QUARTILE'    : (327, 2,  2, 'V', 'RV'),
+    'QUOTIENT'    : ( -1, 2,  2, 'V', 'VV'),
+    'RADIANS'     : (342, 1,  1, 'V', 'V'),
+    'RAND'        : ( 63, 0,  0, 'V', '-'),
+    'RANDBETWEEN' : ( -1, 2,  2, 'V', 'VV'),
+    'RANK'        : (216, 2,  3, 'V', 'VRV'),
+    'RATE'        : ( 60, 3,  6, 'V', 'VVVVVV'),
+    'RECEIVED'    : ( -1, 4,  5, 'V', 'VVVVV'),
+    'REPLACE'     : (119, 4,  4, 'V', 'VVVV'),
+    'REPLACEB'    : (207, 4,  4, 'V', 'VVVV'),
+    'REPT'        : ( 30, 2,  2, 'V', 'VV'),
+    'RIGHT'       : (116, 1,  2, 'V', 'VV'),
+    'RIGHTB'      : (209, 1,  2, 'V', 'VV'),
+    'ROMAN'       : (354, 1,  2, 'V', 'VV'),
+    'ROUND'       : ( 27, 2,  2, 'V', 'VV'),
+    'ROUNDDOWN'   : (213, 2,  2, 'V', 'VV'),
+    'ROUNDUP'     : (212, 2,  2, 'V', 'VV'),
+    'ROW'         : (  8, 0,  1, 'V', 'R'),
+    'ROWS'        : ( 76, 1,  1, 'V', 'R'),
+    'RSQ'         : (313, 2,  2, 'V', 'AA'),
+    'RTD'         : (379, 3, 30, 'A', 'VVV+'),
+    'SEARCH'      : ( 82, 2,  3, 'V', 'VVV'),
+    'SEARCHB'     : (206, 2,  3, 'V', 'VVV'),
+    'SECOND'      : ( 73, 1,  1, 'V', 'V'),
+    'SERIESSUM'   : ( -1, 4,  4, 'V', 'VVVA'),
+    'SIGN'        : ( 26, 1,  1, 'V', 'V'),
+    'SIN'         : ( 15, 1,  1, 'V', 'V'),
+    'SINH'        : (229, 1,  1, 'V', 'V'),
+    'SKEW'        : (323, 1, 30, 'V', 'D+'),
+    'SLN'         : (142, 3,  3, 'V', 'VVV'),
+    'SLOPE'       : (315, 2,  2, 'V', 'AA'),
+    'SMALL'       : (326, 2,  2, 'V', 'RV'),
+    'SQRT'        : ( 20, 1,  1, 'V', 'V'),
+    'SQRTPI'      : ( -1, 1,  1, 'V', 'V'),
+    'STANDARDIZE' : (297, 3,  3, 'V', 'VVV'),
+    'STDEV'       : ( 12, 1, 30, 'V', 'D+'),
+    'STDEVA'      : (366, 1, 30, 'V', 'D+'),
+    'STDEVP'      : (193, 1, 30, 'V', 'D+'),
+    'STDEVPA'     : (364, 1, 30, 'V', 'D+'),
+    'STEYX'       : (314, 2,  2, 'V', 'AA'),
+    'SUBSTITUTE'  : (120, 3,  4, 'V', 'VVVV'),
+    'SUBTOTAL'    : (344, 2, 30, 'V', 'VR+'),
+    'SUM'         : (  4, 1, 30, 'V', 'D+'),
+    'SUMIF'       : (345, 2,  3, 'V', 'RVR'),
+    'SUMPRODUCT'  : (228, 1, 30, 'V', 'A+'),
+    'SUMSQ'       : (321, 1, 30, 'V', 'D+'),
+    'SUMX2MY2'    : (304, 2,  2, 'V', 'AA'),
+    'SUMX2PY2'    : (305, 2,  2, 'V', 'AA'),
+    'SUMXMY2'     : (303, 2,  2, 'V', 'AA'),
+    'SYD'         : (143, 4,  4, 'V', 'VVVV'),
+    'T'           : (130, 1,  1, 'V', 'R'),
+    'TAN'         : ( 17, 1,  1, 'V', 'V'),
+    'TANH'        : (231, 1,  1, 'V', 'V'),
+    'TBILLEQ'     : ( -1, 3,  3, 'V', 'VVV'),
+    'TBILLPRICE'  : ( -1, 3,  3, 'V', 'VVV'),
+    'TBILLYIELD'  : ( -1, 3,  3, 'V', 'VVV'),
+    'TDIST'       : (301, 3,  3, 'V', 'VVV'),
+    'TEXT'        : ( 48, 2,  2, 'V', 'VV'),
+    'TIME'        : ( 66, 3,  3, 'V', 'VVV'),
+    'TIMEVALUE'   : (141, 1,  1, 'V', 'V'),
+    'TINV'        : (332, 2,  2, 'V', 'VV'),
+    'TODAY'       : (221, 0,  0, 'V', '-'),
+    'TRANSPOSE'   : ( 83, 1,  1, 'A', 'A'),
+    'TREND'       : ( 50, 1,  4, 'A', 'RRRV'),
+    'TRIM'        : (118, 1,  1, 'V', 'V'),
+    'TRIMMEAN'    : (331, 2,  2, 'V', 'RV'),
+    'TRUE'        : ( 34, 0,  0, 'V', '-'),
+    'TRUNC'       : (197, 1,  2, 'V', 'VV'),
+    'TTEST'       : (316, 4,  4, 'V', 'AAVV'),
+    'TYPE'        : ( 86, 1,  1, 'V', 'V'),
+    'UPPER'       : (113, 1,  1, 'V', 'V'),
+    'USDOLLAR'    : (204, 1,  2, 'V', 'VV'),
+    'VALUE'       : ( 33, 1,  1, 'V', 'V'),
+    'VAR'         : ( 46, 1, 30, 'V', 'D+'),
+    'VARA'        : (367, 1, 30, 'V', 'D+'),
+    'VARP'        : (194, 1, 30, 'V', 'D+'),
+    'VARPA'       : (365, 1, 30, 'V', 'D+'),
+    'VDB'         : (222, 5,  7, 'V', 'VVVVVVV'),
+    'VLOOKUP'     : (102, 3,  4, 'V', 'VRRV'),
+    'WEEKDAY'     : ( 70, 1,  2, 'V', 'VV'),
+    'WEEKNUM'     : ( -1, 1,  2, 'V', 'VV'),
+    'WEIBULL'     : (302, 4,  4, 'V', 'VVVV'),
+    'WORKDAY'     : ( -1, 2,  3, 'V', 'VVR'),
+    'XIRR'        : ( -1, 2,  3, 'V', 'AAV'),
+    'XNPV'        : ( -1, 3,  3, 'V', 'VAA'),
+    'YEAR'        : ( 69, 1,  1, 'V', 'V'),
+    'YEARFRAC'    : ( -1, 2,  3, 'V', 'VVV'),
+    'YIELD'       : ( -1, 6,  7, 'V', 'VVVVVVV'),
+    'YIELDDISC'   : ( -1, 4,  5, 'V', 'VVVVV'),
+    'YIELDMAT'    : ( -1, 5,  6, 'V', 'VVVVVV'),
+    'ZTEST'       : (324, 2,  3, 'V', 'RVV'),
+    }
+
+# Formulas Parse things
+
+ptgExp          = 0x01
+ptgTbl          = 0x02
+ptgAdd          = 0x03
+ptgSub          = 0x04
+ptgMul          = 0x05
+ptgDiv          = 0x06
+ptgPower        = 0x07
+ptgConcat       = 0x08
+ptgLT           = 0x09
+ptgLE           = 0x0a
+ptgEQ           = 0x0b
+ptgGE           = 0x0c
+ptgGT           = 0x0d
+ptgNE           = 0x0e
+ptgIsect        = 0x0f
+ptgUnion        = 0x10
+ptgRange        = 0x11
+ptgUplus        = 0x12
+ptgUminus       = 0x13
+ptgPercent      = 0x14
+ptgParen        = 0x15
+ptgMissArg      = 0x16
+ptgStr          = 0x17
+ptgExtend       = 0x18
+ptgAttr         = 0x19
+ptgSheet        = 0x1a
+ptgEndSheet     = 0x1b
+ptgErr          = 0x1c
+ptgBool         = 0x1d
+ptgInt          = 0x1e
+ptgNum          = 0x1f
+
+ptgArrayR       = 0x20
+ptgFuncR        = 0x21
+ptgFuncVarR     = 0x22
+ptgNameR        = 0x23
+ptgRefR         = 0x24
+ptgAreaR        = 0x25
+ptgMemAreaR     = 0x26
+ptgMemErrR      = 0x27
+ptgMemNoMemR    = 0x28
+ptgMemFuncR     = 0x29
+ptgRefErrR      = 0x2a
+ptgAreaErrR     = 0x2b
+ptgRefNR        = 0x2c
+ptgAreaNR       = 0x2d
+ptgMemAreaNR    = 0x2e
+ptgMemNoMemNR   = 0x2f
+ptgNameXR       = 0x39
+ptgRef3dR       = 0x3a
+ptgArea3dR      = 0x3b
+ptgRefErr3dR    = 0x3c
+ptgAreaErr3dR   = 0x3d
+
+ptgArrayV       = 0x40
+ptgFuncV        = 0x41
+ptgFuncVarV     = 0x42
+ptgNameV        = 0x43
+ptgRefV         = 0x44
+ptgAreaV        = 0x45
+ptgMemAreaV     = 0x46
+ptgMemErrV      = 0x47
+ptgMemNoMemV    = 0x48
+ptgMemFuncV     = 0x49
+ptgRefErrV      = 0x4a
+ptgAreaErrV     = 0x4b
+ptgRefNV        = 0x4c
+ptgAreaNV       = 0x4d
+ptgMemAreaNV    = 0x4e
+ptgMemNoMemNV   = 0x4f
+ptgFuncCEV      = 0x58
+ptgNameXV       = 0x59
+ptgRef3dV       = 0x5a
+ptgArea3dV      = 0x5b
+ptgRefErr3dV    = 0x5c
+ptgAreaErr3dV   = 0x5d
+
+ptgArrayA       = 0x60
+ptgFuncA        = 0x61
+ptgFuncVarA     = 0x62
+ptgNameA        = 0x63
+ptgRefA         = 0x64
+ptgAreaA        = 0x65
+ptgMemAreaA     = 0x66
+ptgMemErrA      = 0x67
+ptgMemNoMemA    = 0x68
+ptgMemFuncA     = 0x69
+ptgRefErrA      = 0x6a
+ptgAreaErrA     = 0x6b
+ptgRefNA        = 0x6c
+ptgAreaNA       = 0x6d
+ptgMemAreaNA    = 0x6e
+ptgMemNoMemNA   = 0x6f
+ptgFuncCEA      = 0x78
+ptgNameXA       = 0x79
+ptgRef3dA       = 0x7a
+ptgArea3dA      = 0x7b
+ptgRefErr3dA    = 0x7c
+ptgAreaErr3dA   = 0x7d
+
+
+PtgNames = {
+    ptgExp         : "ptgExp",
+    ptgTbl         : "ptgTbl",
+    ptgAdd         : "ptgAdd",
+    ptgSub         : "ptgSub",
+    ptgMul         : "ptgMul",
+    ptgDiv         : "ptgDiv",
+    ptgPower       : "ptgPower",
+    ptgConcat      : "ptgConcat",
+    ptgLT          : "ptgLT",
+    ptgLE          : "ptgLE",
+    ptgEQ          : "ptgEQ",
+    ptgGE          : "ptgGE",
+    ptgGT          : "ptgGT",
+    ptgNE          : "ptgNE",
+    ptgIsect       : "ptgIsect",
+    ptgUnion       : "ptgUnion",
+    ptgRange       : "ptgRange",
+    ptgUplus       : "ptgUplus",
+    ptgUminus      : "ptgUminus",
+    ptgPercent     : "ptgPercent",
+    ptgParen       : "ptgParen",
+    ptgMissArg     : "ptgMissArg",
+    ptgStr         : "ptgStr",
+    ptgExtend      : "ptgExtend",
+    ptgAttr        : "ptgAttr",
+    ptgSheet       : "ptgSheet",
+    ptgEndSheet    : "ptgEndSheet",
+    ptgErr         : "ptgErr",
+    ptgBool        : "ptgBool",
+    ptgInt         : "ptgInt",
+    ptgNum         : "ptgNum",
+    ptgArrayR      : "ptgArrayR",
+    ptgFuncR       : "ptgFuncR",
+    ptgFuncVarR    : "ptgFuncVarR",
+    ptgNameR       : "ptgNameR",
+    ptgRefR        : "ptgRefR",
+    ptgAreaR       : "ptgAreaR",
+    ptgMemAreaR    : "ptgMemAreaR",
+    ptgMemErrR     : "ptgMemErrR",
+    ptgMemNoMemR   : "ptgMemNoMemR",
+    ptgMemFuncR    : "ptgMemFuncR",
+    ptgRefErrR     : "ptgRefErrR",
+    ptgAreaErrR    : "ptgAreaErrR",
+    ptgRefNR       : "ptgRefNR",
+    ptgAreaNR      : "ptgAreaNR",
+    ptgMemAreaNR   : "ptgMemAreaNR",
+    ptgMemNoMemNR  : "ptgMemNoMemNR",
+    ptgNameXR      : "ptgNameXR",
+    ptgRef3dR      : "ptgRef3dR",
+    ptgArea3dR     : "ptgArea3dR",
+    ptgRefErr3dR   : "ptgRefErr3dR",
+    ptgAreaErr3dR  : "ptgAreaErr3dR",
+    ptgArrayV      : "ptgArrayV",
+    ptgFuncV       : "ptgFuncV",
+    ptgFuncVarV    : "ptgFuncVarV",
+    ptgNameV       : "ptgNameV",
+    ptgRefV        : "ptgRefV",
+    ptgAreaV       : "ptgAreaV",
+    ptgMemAreaV    : "ptgMemAreaV",
+    ptgMemErrV     : "ptgMemErrV",
+    ptgMemNoMemV   : "ptgMemNoMemV",
+    ptgMemFuncV    : "ptgMemFuncV",
+    ptgRefErrV     : "ptgRefErrV",
+    ptgAreaErrV    : "ptgAreaErrV",
+    ptgRefNV       : "ptgRefNV",
+    ptgAreaNV      : "ptgAreaNV",
+    ptgMemAreaNV   : "ptgMemAreaNV",
+    ptgMemNoMemNV  : "ptgMemNoMemNV",
+    ptgFuncCEV     : "ptgFuncCEV",
+    ptgNameXV      : "ptgNameXV",
+    ptgRef3dV      : "ptgRef3dV",
+    ptgArea3dV     : "ptgArea3dV",
+    ptgRefErr3dV   : "ptgRefErr3dV",
+    ptgAreaErr3dV  : "ptgAreaErr3dV",
+    ptgArrayA      : "ptgArrayA",
+    ptgFuncA       : "ptgFuncA",
+    ptgFuncVarA    : "ptgFuncVarA",
+    ptgNameA       : "ptgNameA",
+    ptgRefA        : "ptgRefA",
+    ptgAreaA       : "ptgAreaA",
+    ptgMemAreaA    : "ptgMemAreaA",
+    ptgMemErrA     : "ptgMemErrA",
+    ptgMemNoMemA   : "ptgMemNoMemA",
+    ptgMemFuncA    : "ptgMemFuncA",
+    ptgRefErrA     : "ptgRefErrA",
+    ptgAreaErrA    : "ptgAreaErrA",
+    ptgRefNA       : "ptgRefNA",
+    ptgAreaNA      : "ptgAreaNA",
+    ptgMemAreaNA   : "ptgMemAreaNA",
+    ptgMemNoMemNA  : "ptgMemNoMemNA",
+    ptgFuncCEA     : "ptgFuncCEA",
+    ptgNameXA      : "ptgNameXA",
+    ptgRef3dA      : "ptgRef3dA",
+    ptgArea3dA     : "ptgArea3dA",
+    ptgRefErr3dA   : "ptgRefErr3dA",
+    ptgAreaErr3dA  : "ptgAreaErr3dA"
+}
+
+
+error_msg_by_code = {
+    0x00: "#NULL!",  # intersection of two cell ranges is empty
+    0x07: "#DIV/0!", # division by zero
+    0x0F: "#VALUE!", # wrong type of operand
+    0x17: "#REF!",   # illegal or deleted cell reference
+    0x1D: "#NAME?",  # wrong function or range name
+    0x24: "#NUM!",   # value range overflow
+    0x2A: "#N/A!"    # argument or function not available
+}
diff --git a/tablib/packages/xlwt3/Formatting.py b/tablib/packages/xlwt3/Formatting.py
new file mode 100644
index 0000000..c92498b
--- /dev/null
+++ b/tablib/packages/xlwt3/Formatting.py
@@ -0,0 +1,261 @@
+#!/usr/bin/env python
+'''
+The  XF  record is able to store explicit cell formatting attributes or the
+attributes  of  a cell style. Explicit formatting includes the reference to
+a  cell  style  XF  record. This allows to extend a defined cell style with
+some  explicit  attributes.  The  formatting  attributes  are  divided into
+6 groups:
+
+Group           Attributes
+-------------------------------------
+Number format   Number format index (index to FORMAT record)
+Font            Font index (index to FONT record)
+Alignment       Horizontal and vertical alignment, text wrap, indentation,
+                orientation/rotation, text direction
+Border          Border line styles and colours
+Background      Background area style and colours
+Protection      Cell locked, formula hidden
+
+For  each  group  a flag in the cell XF record specifies whether to use the
+attributes  contained  in  that  XF  record  or  in  the  referenced  style
+XF  record. In style XF records, these flags specify whether the attributes
+will  overwrite  explicit  cell  formatting  when  the  style is applied to
+a  cell. Changing a cell style (without applying this style to a cell) will
+change  all  cells which already use that style and do not contain explicit
+cell  attributes for the changed style attributes. If a cell XF record does
+not  contain  explicit  attributes  in a group (if the attribute group flag
+is not set), it repeats the attributes of its style XF record.
+
+'''
+
+from . import BIFFRecords
+
+class Font(object):
+
+    ESCAPEMENT_NONE         = 0x00
+    ESCAPEMENT_SUPERSCRIPT  = 0x01
+    ESCAPEMENT_SUBSCRIPT    = 0x02
+
+    UNDERLINE_NONE          = 0x00
+    UNDERLINE_SINGLE        = 0x01
+    UNDERLINE_SINGLE_ACC    = 0x21
+    UNDERLINE_DOUBLE        = 0x02
+    UNDERLINE_DOUBLE_ACC    = 0x22
+
+    FAMILY_NONE         = 0x00
+    FAMILY_ROMAN        = 0x01
+    FAMILY_SWISS        = 0x02
+    FAMILY_MODERN       = 0x03
+    FAMILY_SCRIPT       = 0x04
+    FAMILY_DECORATIVE   = 0x05
+
+    CHARSET_ANSI_LATIN          = 0x00
+    CHARSET_SYS_DEFAULT         = 0x01
+    CHARSET_SYMBOL              = 0x02
+    CHARSET_APPLE_ROMAN         = 0x4D
+    CHARSET_ANSI_JAP_SHIFT_JIS  = 0x80
+    CHARSET_ANSI_KOR_HANGUL     = 0x81
+    CHARSET_ANSI_KOR_JOHAB      = 0x82
+    CHARSET_ANSI_CHINESE_GBK    = 0x86
+    CHARSET_ANSI_CHINESE_BIG5   = 0x88
+    CHARSET_ANSI_GREEK          = 0xA1
+    CHARSET_ANSI_TURKISH        = 0xA2
+    CHARSET_ANSI_VIETNAMESE     = 0xA3
+    CHARSET_ANSI_HEBREW         = 0xB1
+    CHARSET_ANSI_ARABIC         = 0xB2
+    CHARSET_ANSI_BALTIC         = 0xBA
+    CHARSET_ANSI_CYRILLIC       = 0xCC
+    CHARSET_ANSI_THAI           = 0xDE
+    CHARSET_ANSI_LATIN_II       = 0xEE
+    CHARSET_OEM_LATIN_I         = 0xFF
+
+    def __init__(self):
+        # twip = 1/20 of a point = 1/1440 of a inch
+        # usually resolution == 96 pixels per 1 inch
+        # (rarely 120 pixels per 1 inch or another one)
+
+        self.height = 0x00C8 # 200: this is font with height 10 points
+        self.italic = False
+        self.struck_out = False
+        self.outline = False
+        self.shadow = False
+        self.colour_index = 0x7FFF
+        self.bold = False
+        self._weight = 0x0190 # 0x02BC gives bold font
+        self.escapement = self.ESCAPEMENT_NONE
+        self.underline = self.UNDERLINE_NONE
+        self.family = self.FAMILY_NONE
+        self.charset = self.CHARSET_SYS_DEFAULT
+        self.name = b'Arial'
+
+    def get_biff_record(self):
+        height = self.height
+
+        options = 0x00
+        if self.bold:
+            options |= 0x01
+            self._weight = 0x02BC
+        if self.italic:
+            options |= 0x02
+        if self.underline != self.UNDERLINE_NONE:
+            options |= 0x04
+        if self.struck_out:
+            options |= 0x08
+        if self.outline:
+            options |= 0x010
+        if self.shadow:
+            options |= 0x020
+
+        colour_index = self.colour_index
+        weight = self._weight
+        escapement = self.escapement
+        underline = self.underline
+        family = self.family
+        charset = self.charset
+        name = self.name
+
+        return BIFFRecords.FontRecord(height, options, colour_index, weight, escapement,
+                    underline, family, charset,
+                    name)
+
+    def _search_key(self):
+        return (
+            self.height,
+            self.italic,
+            self.struck_out,
+            self.outline,
+            self.shadow,
+            self.colour_index,
+            self.bold,
+            self._weight,
+            self.escapement,
+            self.underline,
+            self.family,
+            self.charset,
+            self.name,
+            )
+
+class Alignment(object):
+    HORZ_GENERAL                = 0x00
+    HORZ_LEFT                   = 0x01
+    HORZ_CENTER                 = 0x02
+    HORZ_RIGHT                  = 0x03
+    HORZ_FILLED                 = 0x04
+    HORZ_JUSTIFIED              = 0x05 # BIFF4-BIFF8X
+    HORZ_CENTER_ACROSS_SEL      = 0x06 # Centred across selection (BIFF4-BIFF8X)
+    HORZ_DISTRIBUTED            = 0x07 # Distributed (BIFF8X)
+
+    VERT_TOP                    = 0x00
+    VERT_CENTER                 = 0x01
+    VERT_BOTTOM                 = 0x02
+    VERT_JUSTIFIED              = 0x03 # Justified (BIFF5-BIFF8X)
+    VERT_DISTRIBUTED            = 0x04 # Distributed (BIFF8X)
+
+    DIRECTION_GENERAL           = 0x00 # BIFF8X
+    DIRECTION_LR                = 0x01
+    DIRECTION_RL                = 0x02
+
+    ORIENTATION_NOT_ROTATED     = 0x00
+    ORIENTATION_STACKED         = 0x01
+    ORIENTATION_90_CC           = 0x02
+    ORIENTATION_90_CW           = 0x03
+
+    ROTATION_0_ANGLE            = 0x00
+    ROTATION_STACKED            = 0xFF
+
+    WRAP_AT_RIGHT               = 0x01
+    NOT_WRAP_AT_RIGHT           = 0x00
+
+    SHRINK_TO_FIT               = 0x01
+    NOT_SHRINK_TO_FIT           = 0x00
+
+    def __init__(self):
+        self.horz = self.HORZ_GENERAL
+        self.vert = self.VERT_BOTTOM
+        self.dire = self.DIRECTION_GENERAL
+        self.orie = self.ORIENTATION_NOT_ROTATED
+        self.rota = self.ROTATION_0_ANGLE
+        self.wrap = self.NOT_WRAP_AT_RIGHT
+        self.shri = self.NOT_SHRINK_TO_FIT
+        self.inde = 0
+        self.merg = 0
+
+    def _search_key(self):
+        return (
+            self.horz, self.vert, self.dire, self.orie, self.rota,
+            self.wrap, self.shri, self.inde, self.merg,
+            )
+
+class Borders(object):
+    NO_LINE = 0x00
+    THIN    = 0x01
+    MEDIUM  = 0x02
+    DASHED  = 0x03
+    DOTTED  = 0x04
+    THICK   = 0x05
+    DOUBLE  = 0x06
+    HAIR    = 0x07
+    #The following for BIFF8
+    MEDIUM_DASHED               = 0x08
+    THIN_DASH_DOTTED            = 0x09
+    MEDIUM_DASH_DOTTED          = 0x0A
+    THIN_DASH_DOT_DOTTED        = 0x0B
+    MEDIUM_DASH_DOT_DOTTED      = 0x0C
+    SLANTED_MEDIUM_DASH_DOTTED  = 0x0D
+
+    NEED_DIAG1      = 0x01
+    NEED_DIAG2      = 0x01
+    NO_NEED_DIAG1   = 0x00
+    NO_NEED_DIAG2   = 0x00
+
+    def __init__(self):
+        self.left   = self.NO_LINE
+        self.right  = self.NO_LINE
+        self.top    = self.NO_LINE
+        self.bottom = self.NO_LINE
+        self.diag   = self.NO_LINE
+
+        self.left_colour   = 0x40
+        self.right_colour  = 0x40
+        self.top_colour    = 0x40
+        self.bottom_colour = 0x40
+        self.diag_colour   = 0x40
+
+        self.need_diag1 = self.NO_NEED_DIAG1
+        self.need_diag2 = self.NO_NEED_DIAG2
+
+    def _search_key(self):
+        return (
+             self.left, self.right, self.top, self.bottom, self.diag,
+             self.left_colour, self.right_colour, self.top_colour,
+             self.bottom_colour, self.diag_colour,
+             self.need_diag1, self.need_diag2,
+            )
+
+class Pattern(object):
+    # patterns 0x00 - 0x12
+    NO_PATTERN      = 0x00
+    SOLID_PATTERN   = 0x01
+
+    def __init__(self):
+        self.pattern = self.NO_PATTERN
+        self.pattern_fore_colour = 0x40
+        self.pattern_back_colour = 0x41
+
+    def _search_key(self):
+        return (
+            self.pattern,
+            self.pattern_fore_colour,
+            self.pattern_back_colour,
+            )
+
+class Protection(object):
+    def __init__(self):
+        self.cell_locked = 1
+        self.formula_hidden = 0
+
+    def _search_key(self):
+        return (
+            self.cell_locked,
+            self.formula_hidden,
+            )
diff --git a/tablib/packages/xlwt3/Row.py b/tablib/packages/xlwt3/Row.py
new file mode 100644
index 0000000..46447b8
--- /dev/null
+++ b/tablib/packages/xlwt3/Row.py
@@ -0,0 +1,253 @@
+# -*- coding: windows-1252 -*-
+
+from . import BIFFRecords
+from . import Style
+from .Cell import StrCell, BlankCell, NumberCell, FormulaCell, MulBlankCell, BooleanCell, ErrorCell, \
+    _get_cells_biff_data_mul
+from . import ExcelFormula
+import datetime as dt
+try:
+    from decimal import Decimal
+except ImportError:
+    # Python 2.3: decimal not supported; create dummy Decimal class
+    class Decimal(object):
+        pass
+
+
+class Row(object):
+    __slots__ = [# private variables
+                 "__idx",
+                 "__parent",
+                 "__parent_wb",
+                 "__cells",
+                 "__min_col_idx",
+                 "__max_col_idx",
+                 "__xf_index",
+                 "__has_default_xf_index",
+                 "__height_in_pixels",
+                 # public variables
+                 "height",
+                 "has_default_height",
+                 "height_mismatch",
+                 "level",
+                 "collapse",
+                 "hidden",
+                 "space_above",
+                 "space_below"]
+
+    def __init__(self, rowx, parent_sheet):
+        if not (isinstance(rowx, int) and 0 <= rowx <= 65535):
+            raise ValueError("row index (%r) not an int in range(65536)" % rowx)
+        self.__idx = rowx
+        self.__parent = parent_sheet
+        self.__parent_wb = parent_sheet.get_parent()
+        self.__cells = {}
+        self.__min_col_idx = 0
+        self.__max_col_idx = 0
+        self.__xf_index = 0x0F
+        self.__has_default_xf_index = 0
+        self.__height_in_pixels = 0x11
+
+        self.height = 0x00FF
+        self.has_default_height = 0x00
+        self.height_mismatch = 0
+        self.level = 0
+        self.collapse = 0
+        self.hidden = 0
+        self.space_above = 0
+        self.space_below = 0
+
+
+    def __adjust_height(self, style):
+        twips = style.font.height
+        points = float(twips)/20.0
+        # Cell height in pixels can be calcuted by following approx. formula:
+        # cell height in pixels = font height in points * 83/50 + 2/5
+        # It works when screen resolution is 96 dpi
+        pix = int(round(points*83.0/50.0 + 2.0/5.0))
+        if pix > self.__height_in_pixels:
+            self.__height_in_pixels = pix
+
+
+    def __adjust_bound_col_idx(self, *args):
+        for arg in args:
+            iarg = int(arg)
+            if not ((0 <= iarg <= 255) and arg == iarg):
+                raise ValueError("column index (%r) not an int in range(256)" % arg)
+            sheet = self.__parent
+            if iarg < self.__min_col_idx:
+                self.__min_col_idx = iarg
+            if iarg > self.__max_col_idx:
+                self.__max_col_idx = iarg
+            if iarg < sheet.first_used_col:
+                sheet.first_used_col = iarg
+            if iarg > sheet.last_used_col:
+                sheet.last_used_col = iarg
+
+    def __excel_date_dt(self, date):
+        if isinstance(date, dt.date) and (not isinstance(date, dt.datetime)):
+            epoch = dt.date(1899, 12, 31)
+        elif isinstance(date, dt.time):
+            date = dt.datetime.combine(dt.datetime(1900, 1, 1), date)
+            epoch = dt.datetime(1900, 1, 1, 0, 0, 0)
+        else:
+            epoch = dt.datetime(1899, 12, 31, 0, 0, 0)
+        delta = date - epoch
+        xldate = delta.days + float(delta.seconds) / (24*60*60)
+        # Add a day for Excel's missing leap day in 1900
+        if xldate > 59:
+            xldate += 1
+        return xldate
+
+    def get_height_in_pixels(self):
+        return self.__height_in_pixels
+
+
+    def set_style(self, style):
+        self.__adjust_height(style)
+        self.__xf_index = self.__parent_wb.add_style(style)
+        self.__has_default_xf_index = 1
+
+
+    def get_xf_index(self):
+        return self.__xf_index
+
+
+    def get_cells_count(self):
+        return len(self.__cells)
+
+
+    def get_min_col(self):
+        return self.__min_col_idx
+
+
+    def get_max_col(self):
+        return self.__max_col_idx
+
+
+    def get_row_biff_data(self):
+        height_options = (self.height & 0x07FFF)
+        height_options |= (self.has_default_height & 0x01) << 15
+
+        options =  (self.level & 0x07) << 0
+        options |= (self.collapse & 0x01) << 4
+        options |= (self.hidden & 0x01) << 5
+        options |= (self.height_mismatch & 0x01) << 6
+        options |= (self.__has_default_xf_index & 0x01) << 7
+        options |= (0x01 & 0x01) << 8
+        options |= (self.__xf_index & 0x0FFF) << 16
+        options |= (self.space_above & 1) << 28
+        options |= (self.space_below & 1) << 29
+
+        return BIFFRecords.RowRecord(self.__idx, self.__min_col_idx,
+            self.__max_col_idx, height_options, options).get()
+
+    def insert_cell(self, col_index, cell_obj):
+        if col_index in self.__cells:
+            if not self.__parent._cell_overwrite_ok:
+                msg = "Attempt to overwrite cell: sheetname=%r rowx=%d colx=%d" \
+                    % (self.__parent.name, self.__idx, col_index)
+                raise Exception(msg)
+            prev_cell_obj = self.__cells[col_index]
+            sst_idx = getattr(prev_cell_obj, 'sst_idx', None)
+            if sst_idx is not None:
+                self.__parent_wb.del_str(sst_idx)
+        self.__cells[col_index] = cell_obj
+
+    def insert_mulcells(self, colx1, colx2, cell_obj):
+        self.insert_cell(colx1, cell_obj)
+        for col_index in range(colx1+1, colx2+1):
+            self.insert_cell(col_index, None)
+
+    def get_cells_biff_data(self):
+        cell_items = [item for item in self.__cells.items() if item[1] is not None]
+        cell_items.sort() # in column order
+        return _get_cells_biff_data_mul(self.__idx, cell_items)
+        # previously:
+        # return ''.join([cell.get_biff_data() for colx, cell in cell_items])
+
+    def get_index(self):
+        return self.__idx
+
+    def set_cell_text(self, colx, value, style=Style.default_style):
+        self.__adjust_height(style)
+        self.__adjust_bound_col_idx(colx)
+        xf_index = self.__parent_wb.add_style(style)
+        self.insert_cell(colx, StrCell(self.__idx, colx, xf_index, self.__parent_wb.add_str(value)))
+
+    def set_cell_blank(self, colx, style=Style.default_style):
+        self.__adjust_height(style)
+        self.__adjust_bound_col_idx(colx)
+        xf_index = self.__parent_wb.add_style(style)
+        self.insert_cell(colx, BlankCell(self.__idx, colx, xf_index))
+
+    def set_cell_mulblanks(self, first_colx, last_colx, style=Style.default_style):
+        assert 0 <= first_colx <= last_colx <= 255
+        self.__adjust_height(style)
+        self.__adjust_bound_col_idx(first_colx, last_colx)
+        xf_index = self.__parent_wb.add_style(style)
+        # ncols = last_colx - first_colx + 1
+        self.insert_mulcells(first_colx, last_colx, MulBlankCell(self.__idx, first_colx, last_colx, xf_index))
+
+    def set_cell_number(self, colx, number, style=Style.default_style):
+        self.__adjust_height(style)
+        self.__adjust_bound_col_idx(colx)
+        xf_index = self.__parent_wb.add_style(style)
+        self.insert_cell(colx, NumberCell(self.__idx, colx, xf_index, number))
+
+    def set_cell_date(self, colx, datetime_obj, style=Style.default_style):
+        self.__adjust_height(style)
+        self.__adjust_bound_col_idx(colx)
+        xf_index = self.__parent_wb.add_style(style)
+        self.insert_cell(colx,
+            NumberCell(self.__idx, colx, xf_index, self.__excel_date_dt(datetime_obj)))
+
+    def set_cell_formula(self, colx, formula, style=Style.default_style, calc_flags=0):
+        self.__adjust_height(style)
+        self.__adjust_bound_col_idx(colx)
+        xf_index = self.__parent_wb.add_style(style)
+        self.__parent_wb.add_sheet_reference(formula)
+        self.insert_cell(colx, FormulaCell(self.__idx, colx, xf_index, formula, calc_flags=0))
+
+    def set_cell_boolean(self, colx, value, style=Style.default_style):
+        self.__adjust_height(style)
+        self.__adjust_bound_col_idx(colx)
+        xf_index = self.__parent_wb.add_style(style)
+        self.insert_cell(colx, BooleanCell(self.__idx, colx, xf_index, bool(value)))
+
+    def set_cell_error(self, colx, error_string_or_code, style=Style.default_style):
+        self.__adjust_height(style)
+        self.__adjust_bound_col_idx(colx)
+        xf_index = self.__parent_wb.add_style(style)
+        self.insert_cell(colx, ErrorCell(self.__idx, colx, xf_index, error_string_or_code))
+
+    def write(self, col, label, style=Style.default_style):
+        self.__adjust_height(style)
+        self.__adjust_bound_col_idx(col)
+        style_index = self.__parent_wb.add_style(style)
+        if isinstance(label, str):
+            if len(label) > 0:
+                self.insert_cell(col,
+                    StrCell(self.__idx, col, style_index, self.__parent_wb.add_str(label))
+                    )
+            else:
+                self.insert_cell(col, BlankCell(self.__idx, col, style_index))
+        elif isinstance(label, bool): # bool is subclass of int; test bool first
+            self.insert_cell(col, BooleanCell(self.__idx, col, style_index, label))
+        elif isinstance(label, (float, int, Decimal)):
+            self.insert_cell(col, NumberCell(self.__idx, col, style_index, label))
+        elif isinstance(label, (dt.datetime, dt.date, dt.time)):
+            date_number = self.__excel_date_dt(label)
+            self.insert_cell(col, NumberCell(self.__idx, col, style_index, date_number))
+        elif label is None:
+            self.insert_cell(col, BlankCell(self.__idx, col, style_index))
+        elif isinstance(label, ExcelFormula.Formula):
+            self.__parent_wb.add_sheet_reference(label)
+            self.insert_cell(col, FormulaCell(self.__idx, col, style_index, label))
+        else:
+            raise Exception("Unexpected data type %r" % type(label))
+
+    write_blanks = set_cell_mulblanks
+
+
+
diff --git a/tablib/packages/xlwt3/Style.py b/tablib/packages/xlwt3/Style.py
new file mode 100644
index 0000000..182fc07
--- /dev/null
+++ b/tablib/packages/xlwt3/Style.py
@@ -0,0 +1,593 @@
+# -*- coding: windows-1252 -*-
+
+from . import Formatting
+from .BIFFRecords import *
+import collections
+
+FIRST_USER_DEFINED_NUM_FORMAT_IDX = 164
+
+class XFStyle(object):
+
+    def __init__(self):
+        self.num_format_str  = 'General'
+        self.font            = Formatting.Font()
+        self.alignment       = Formatting.Alignment()
+        self.borders         = Formatting.Borders()
+        self.pattern         = Formatting.Pattern()
+        self.protection      = Formatting.Protection()
+
+default_style = XFStyle()
+
+class StyleCollection(object):
+    _std_num_fmt_list = [
+            'general',
+            '0',
+            '0.00',
+            '#,##0',
+            '#,##0.00',
+            '"$"#,##0_);("$"#,##',
+            '"$"#,##0_);[Red]("$"#,##',
+            '"$"#,##0.00_);("$"#,##',
+            '"$"#,##0.00_);[Red]("$"#,##',
+            '0%',
+            '0.00%',
+            '0.00E+00',
+            '# ?/?',
+            '# ??/??',
+            'M/D/YY',
+            'D-MMM-YY',
+            'D-MMM',
+            'MMM-YY',
+            'h:mm AM/PM',
+            'h:mm:ss AM/PM',
+            'h:mm',
+            'h:mm:ss',
+            'M/D/YY h:mm',
+            '_(#,##0_);(#,##0)',
+            '_(#,##0_);[Red](#,##0)',
+            '_(#,##0.00_);(#,##0.00)',
+            '_(#,##0.00_);[Red](#,##0.00)',
+            '_("$"* #,##0_);_("$"* (#,##0);_("$"* "-"_);_(@_)',
+            '_(* #,##0_);_(* (#,##0);_(* "-"_);_(@_)',
+            '_("$"* #,##0.00_);_("$"* (#,##0.00);_("$"* "-"??_);_(@_)',
+            '_(* #,##0.00_);_(* (#,##0.00);_(* "-"??_);_(@_)',
+            'mm:ss',
+            '[h]:mm:ss',
+            'mm:ss.0',
+            '##0.0E+0',
+            '@'
+    ]
+
+    def __init__(self, style_compression=0):
+        self.style_compression = style_compression
+        self.stats = [0, 0, 0, 0, 0, 0]
+        self._font_id2x = {}
+        self._font_x2id = {}
+        self._font_val2x = {}
+
+        for x in (0, 1, 2, 3, 5): # The font with index 4 is omitted in all BIFF versions
+            font = Formatting.Font()
+            search_key = font._search_key()
+            self._font_id2x[font] = x
+            self._font_x2id[x] = font
+            self._font_val2x[search_key] = x
+
+        self._xf_id2x = {}
+        self._xf_x2id = {}
+        self._xf_val2x = {}
+
+        self._num_formats = {}
+        for fmtidx, fmtstr in zip(list(range(0, 23)), StyleCollection._std_num_fmt_list[0:23]):
+            self._num_formats[fmtstr] = fmtidx
+        for fmtidx, fmtstr in zip(list(range(37, 50)), StyleCollection._std_num_fmt_list[23:]):
+            self._num_formats[fmtstr] = fmtidx
+
+        self.default_style = XFStyle()
+        self._default_xf = self._add_style(self.default_style)[0]
+
+    def add(self, style):
+        if style == None:
+            return 0x10
+        return self._add_style(style)[1]
+
+    def _add_style(self, style):
+        num_format_str = style.num_format_str
+        if num_format_str in self._num_formats:
+            num_format_idx = self._num_formats[num_format_str]
+        else:
+            num_format_idx = (
+                FIRST_USER_DEFINED_NUM_FORMAT_IDX
+                + len(self._num_formats)
+                - len(StyleCollection._std_num_fmt_list)
+                )
+            self._num_formats[num_format_str] = num_format_idx
+
+        font = style.font
+        if font in self._font_id2x:
+            font_idx = self._font_id2x[font]
+            self.stats[0] += 1
+        elif self.style_compression:
+            search_key = font._search_key()
+            font_idx = self._font_val2x.get(search_key)
+            if font_idx is not None:
+                self._font_id2x[font] = font_idx
+                self.stats[1] += 1
+            else:
+                font_idx = len(self._font_x2id) + 1 # Why plus 1? Font 4 is missing
+                self._font_id2x[font] = font_idx
+                self._font_val2x[search_key] = font_idx
+                self._font_x2id[font_idx] = font
+                self.stats[2] += 1
+        else:
+            font_idx = len(self._font_id2x) + 1
+            self._font_id2x[font] = font_idx
+            self.stats[2] += 1
+
+        gof = (style.alignment, style.borders, style.pattern, style.protection)
+        xf = (font_idx, num_format_idx) + gof
+        if xf in self._xf_id2x:
+            xf_index = self._xf_id2x[xf]
+            self.stats[3] += 1
+        elif self.style_compression == 2:
+            xf_key = (font_idx, num_format_idx) + tuple([obj._search_key() for obj in gof])
+            xf_index = self._xf_val2x.get(xf_key)
+            if xf_index is not None:
+                self._xf_id2x[xf] = xf_index
+                self.stats[4] += 1
+            else:
+                xf_index = 0x10 + len(self._xf_x2id)
+                self._xf_id2x[xf] = xf_index
+                self._xf_val2x[xf_key] = xf_index
+                self._xf_x2id[xf_index] = xf
+                self.stats[5] += 1
+        else:
+            xf_index = 0x10 + len(self._xf_id2x)
+            self._xf_id2x[xf] = xf_index
+            self.stats[5] += 1
+
+        if xf_index >= 0xFFF:
+            # 12 bits allowed, 0xFFF is a sentinel value
+            raise ValueError("More than 4094 XFs (styles)")
+
+        return xf, xf_index
+
+    def get_biff_data(self):
+        result = b''
+        result += self._all_fonts()
+        result += self._all_num_formats()
+        result += self._all_cell_styles()
+        result += self._all_styles()
+        return result
+
+    def _all_fonts(self):
+        result = b''
+        if self.style_compression:
+            alist = list(self._font_x2id.items())
+        else:
+            alist = [(x, o) for o, x in list(self._font_id2x.items())]
+        alist.sort()
+        for font_idx, font in alist:
+            result += font.get_biff_record().get()
+        return result
+
+    def _all_num_formats(self):
+        result = b''
+        alist = [
+            (v, k)
+            for k, v in list(self._num_formats.items())
+            if v >= FIRST_USER_DEFINED_NUM_FORMAT_IDX
+            ]
+        alist.sort()
+        for fmtidx, fmtstr in alist:
+            result += NumberFormatRecord(fmtidx, fmtstr).get()
+        return result
+
+    def _all_cell_styles(self):
+        result = b''
+        for i in range(0, 16):
+            result += XFRecord(self._default_xf, 'style').get()
+        if self.style_compression == 2:
+            alist = list(self._xf_x2id.items())
+        else:
+            alist = [(x, o) for o, x in list(self._xf_id2x.items())]
+        alist.sort()
+        for xf_idx, xf in alist:
+            result += XFRecord(xf).get()
+        return result
+
+    def _all_styles(self):
+        return StyleRecord().get()
+
+# easyxf and its supporting objects ###################################
+
+class EasyXFException(Exception):
+    pass
+
+class EasyXFCallerError(EasyXFException):
+    pass
+
+class EasyXFAuthorError(EasyXFException):
+    pass
+
+class IntULim(object):
+    # If astring represents a valid unsigned integer ('123', '0xabcd', etc)
+    # and it is <= limit, return the int value; otherwise return None.
+
+    def __init__(self, limit):
+        self.limit = limit
+
+    def __call__(self, astring):
+        try:
+            value = int(astring, 0)
+        except ValueError:
+            return None
+        if not 0 <= value <= self.limit:
+            return None
+        return value
+
+bool_map = {
+    # Text values for all Boolean attributes
+    '1': 1, 'yes': 1, 'true':  1, 'on':  1,
+    '0': 0, 'no':  0, 'false': 0, 'off': 0,
+    }
+
+border_line_map = {
+    # Text values for these borders attributes:
+    # left, right, top, bottom and diag
+    'no_line':  0x00,
+    'thin':     0x01,
+    'medium':   0x02,
+    'dashed':   0x03,
+    'dotted':   0x04,
+    'thick':    0x05,
+    'double':   0x06,
+    'hair':     0x07,
+    'medium_dashed':                0x08,
+    'thin_dash_dotted':             0x09,
+    'medium_dash_dotted':           0x0a,
+    'thin_dash_dot_dotted':         0x0b,
+    'medium_dash_dot_dotted':       0x0c,
+    'slanted_medium_dash_dotted':   0x0d,
+    }
+
+charset_map = {
+    # Text values for font.charset
+    'ansi_latin':           0x00,
+    'sys_default':          0x01,
+    'symbol':               0x02,
+    'apple_roman':          0x4d,
+    'ansi_jap_shift_jis':   0x80,
+    'ansi_kor_hangul':      0x81,
+    'ansi_kor_johab':       0x82,
+    'ansi_chinese_gbk':     0x86,
+    'ansi_chinese_big5':    0x88,
+    'ansi_greek':           0xa1,
+    'ansi_turkish':         0xa2,
+    'ansi_vietnamese':      0xa3,
+    'ansi_hebrew':          0xb1,
+    'ansi_arabic':          0xb2,
+    'ansi_baltic':          0xba,
+    'ansi_cyrillic':        0xcc,
+    'ansi_thai':            0xde,
+    'ansi_latin_ii':        0xee,
+    'oem_latin_i':          0xff,
+    }
+
+
+# Text values for colour indices. "grey" is a synonym of "gray".
+# The names are those given by Microsoft Excel 2003 to the colours
+# in the default palette. There is no great correspondence with
+# any W3C name-to-RGB mapping.
+_colour_map_text = """\
+aqua 0x31
+black 0x08
+blue 0x0C
+blue_gray 0x36
+bright_green 0x0B
+brown 0x3C
+coral 0x1D
+cyan_ega 0x0F
+dark_blue 0x12
+dark_blue_ega 0x12
+dark_green 0x3A
+dark_green_ega 0x11
+dark_purple 0x1C
+dark_red 0x10
+dark_red_ega 0x10
+dark_teal 0x38
+dark_yellow 0x13
+gold 0x33
+gray_ega 0x17
+gray25 0x16
+gray40 0x37
+gray50 0x17
+gray80 0x3F
+green 0x11
+ice_blue 0x1F
+indigo 0x3E
+ivory 0x1A
+lavender 0x2E
+light_blue 0x30
+light_green 0x2A
+light_orange 0x34
+light_turquoise 0x29
+light_yellow 0x2B
+lime 0x32
+magenta_ega 0x0E
+ocean_blue 0x1E
+olive_ega 0x13
+olive_green 0x3B
+orange 0x35
+pale_blue 0x2C
+periwinkle 0x18
+pink 0x0E
+plum 0x3D
+purple_ega 0x14
+red 0x0A
+rose 0x2D
+sea_green 0x39
+silver_ega 0x16
+sky_blue 0x28
+tan 0x2F
+teal 0x15
+teal_ega 0x15
+turquoise 0x0F
+violet 0x14
+white 0x09
+yellow 0x0D"""
+
+colour_map = {}
+for _line in _colour_map_text.splitlines():
+    _name, _num = _line.split()
+    _num = int(_num, 0)
+    colour_map[_name] = _num
+    if 'gray' in _name:
+        colour_map[_name.replace('gray', 'grey')] = _num
+del _colour_map_text, _line, _name, _num
+
+
+pattern_map = {
+    # Text values for pattern.pattern
+    # xlwt/doc/pattern_examples.xls showcases all of these patterns.
+    'no_fill':              0,
+    'none':                 0,
+    'solid':                1,
+    'solid_fill':           1,
+    'solid_pattern':        1,
+    'fine_dots':            2,
+    'alt_bars':             3,
+    'sparse_dots':          4,
+    'thick_horz_bands':     5,
+    'thick_vert_bands':     6,
+    'thick_backward_diag':  7,
+    'thick_forward_diag':   8,
+    'big_spots':            9,
+    'bricks':               10,
+    'thin_horz_bands':      11,
+    'thin_vert_bands':      12,
+    'thin_backward_diag':   13,
+    'thin_forward_diag':    14,
+    'squares':              15,
+    'diamonds':             16,
+    }
+
+def any_str_func(s):
+    return s.strip()
+
+def colour_index_func(s, maxval=0x7F):
+    try:
+        value = int(s, 0)
+    except ValueError:
+        return None
+    if not (0 <= value <= maxval):
+        return None
+    return value
+
+colour_index_func_7 = colour_index_func
+
+def colour_index_func_15(s):
+    return colour_index_func(s, maxval=0x7FFF)
+
+def rotation_func(s):
+    try:
+        value = int(s, 0)
+    except ValueError:
+        return None
+    if not (-90 <= value <= 90):
+        raise EasyXFCallerError("rotation %d: should be -90 to +90 degrees" % value)
+    if value < 0:
+        value = 90 - value # encode as 91 to 180 (clockwise)
+    return value
+
+xf_dict = {
+    'align': 'alignment', # synonym
+    'alignment': {
+        'dire': {
+            'general': 0,
+            'lr': 1,
+            'rl': 2,
+            },
+        'direction': 'dire',
+        'horiz': 'horz',
+        'horizontal': 'horz',
+        'horz': {
+            'general': 0,
+            'left': 1,
+            'center': 2,
+            'centre': 2, # "align: horiz centre" means xf.alignment.horz is set to 2
+            'right': 3,
+            'filled': 4,
+            'justified': 5,
+            'center_across_selection': 6,
+            'centre_across_selection': 6,
+            'distributed': 7,
+            },
+        'inde': IntULim(15), # restriction: 0 <= value <= 15
+        'indent': 'inde',
+        'rota': [{'stacked': 255, 'none': 0, }, rotation_func],
+        'rotation': 'rota',
+        'shri': bool_map,
+        'shrink': 'shri',
+        'shrink_to_fit': 'shri',
+        'vert': {
+            'top': 0,
+            'center': 1,
+            'centre': 1,
+            'bottom': 2,
+            'justified': 3,
+            'distributed': 4,
+            },
+         'vertical': 'vert',
+         'wrap': bool_map,
+         },
+    'border': 'borders',
+    'borders': {
+        'left':     [border_line_map, IntULim(0x0d)],
+        'right':    [border_line_map, IntULim(0x0d)],
+        'top':      [border_line_map, IntULim(0x0d)],
+        'bottom':   [border_line_map, IntULim(0x0d)],
+        'diag':     [border_line_map, IntULim(0x0d)],
+        'top_colour':       [colour_map, colour_index_func_7],
+        'bottom_colour':    [colour_map, colour_index_func_7],
+        'left_colour':      [colour_map, colour_index_func_7],
+        'right_colour':     [colour_map, colour_index_func_7],
+        'diag_colour':      [colour_map, colour_index_func_7],
+        'top_color':        'top_colour',
+        'bottom_color':     'bottom_colour',
+        'left_color':       'left_colour',
+        'right_color':      'right_colour',
+        'diag_color':       'diag-colour',
+        'need_diag_1':  bool_map,
+        'need_diag_2':  bool_map,
+        },
+    'font': {
+        'bold': bool_map,
+        'charset': charset_map,
+        'color':  'colour_index',
+        'color_index':  'colour_index',
+        'colour':  'colour_index',
+        'colour_index': [colour_map, colour_index_func_15],
+        'escapement': {'none': 0, 'superscript': 1, 'subscript': 2},
+        'family': {'none': 0, 'roman': 1, 'swiss': 2, 'modern': 3, 'script': 4, 'decorative': 5, },
+        'height': IntULim(0xFFFF), # practical limits are much narrower e.g. 160 to 1440 (8pt to 72pt)
+        'italic': bool_map,
+        'name': any_str_func,
+        'outline': bool_map,
+        'shadow': bool_map,
+        'struck_out': bool_map,
+        'underline': [bool_map, {'none': 0, 'single': 1, 'single_acc': 0x21, 'double': 2, 'double_acc': 0x22, }],
+        },
+    'pattern': {
+        'back_color':   'pattern_back_colour',
+        'back_colour':  'pattern_back_colour',
+        'fore_color':   'pattern_fore_colour',
+        'fore_colour':  'pattern_fore_colour',
+        'pattern': [pattern_map, IntULim(16)],
+        'pattern_back_color':   'pattern_back_colour',
+        'pattern_back_colour':  [colour_map, colour_index_func_7],
+        'pattern_fore_color':   'pattern_fore_colour',
+        'pattern_fore_colour':  [colour_map, colour_index_func_7],
+        },
+    'protection': {
+        'cell_locked' :   bool_map,
+        'formula_hidden': bool_map,
+        },
+    }
+
+def _esplit(s, split_char, esc_char="\\"):
+    escaped = False
+    olist = ['']
+    for c in s:
+        if escaped:
+            olist[-1] += c
+            escaped = False
+        elif c == esc_char:
+            escaped = True
+        elif c == split_char:
+            olist.append('')
+        else:
+            olist[-1] += c
+    return olist
+
+def _parse_strg_to_obj(strg, obj, parse_dict,
+    field_sep=",", line_sep=";", intro_sep=":", esc_char="\\", debug=False):
+    for line in _esplit(strg, line_sep, esc_char):
+        line = line.strip()
+        if not line:
+            break
+        split_line = _esplit(line, intro_sep, esc_char)
+        if len(split_line) != 2:
+            raise EasyXFCallerError('line %r should have exactly 1 "%c"' % (line, intro_sep))
+        section, item_str = split_line
+        section = section.strip().lower()
+        for counter in range(2):
+            result = parse_dict.get(section)
+            if result is None:
+                raise EasyXFCallerError('section %r is unknown' % section)
+            if isinstance(result, dict):
+                break
+            if not isinstance(result, str):
+                raise EasyXFAuthorError(
+                    'section %r should map to dict or str object; found %r' % (section, type(result)))
+            # synonym
+            old_section = section
+            section = result
+        else:
+            raise EasyXFAuthorError('Attempt to define synonym of synonym (%r: %r)' % (old_section, result))
+        section_dict = result
+        section_obj = getattr(obj, section, None)
+        if section_obj is None:
+            raise EasyXFAuthorError('instance of %s class has no attribute named %s' % (obj.__class__.__name__, section))
+        for kv_str in _esplit(item_str, field_sep, esc_char):
+            guff = kv_str.split()
+            if not guff:
+                continue
+            k = guff[0].lower().replace('-', '_')
+            v = ' '.join(guff[1:])
+            if not v:
+                raise EasyXFCallerError("no value supplied for %s.%s" % (section, k))
+            for counter in range(2):
+                result = section_dict.get(k)
+                if result is None:
+                    raise EasyXFCallerError('%s.%s is not a known attribute' % (section, k))
+                if not isinstance(result, str):
+                    break
+                # synonym
+                old_k = k
+                k = result
+            else:
+                raise EasyXFAuthorError('Attempt to define synonym of synonym (%r: %r)' % (old_k, result))
+            value_info = result
+            if not isinstance(value_info, list):
+                value_info = [value_info]
+            for value_rule in value_info:
+                if isinstance(value_rule, dict):
+                    # dict maps strings to integer field values
+                    vl = v.lower().replace('-', '_')
+                    if vl in value_rule:
+                        value = value_rule[vl]
+                        break
+                elif isinstance(value_rule, collections.Callable):
+                    value = value_rule(v)
+                    if value is not None:
+                        break
+                else:
+                    raise EasyXFAuthorError("unknown value rule for attribute %r: %r" % (k, value_rule))
+            else:
+                raise EasyXFCallerError("unexpected value %r for %s.%s" % (v, section, k))
+            try:
+                orig = getattr(section_obj, k)
+            except AttributeError:
+                raise EasyXFAuthorError('%s.%s in dictionary but not in supplied object' % (section, k))
+            if debug: print("+++ %s.%s = %r # %s; was %r" % (section, k, value, v, orig))
+            setattr(section_obj, k, value)
+
+def easyxf(strg_to_parse="", num_format_str=None,
+    field_sep=",", line_sep=";", intro_sep=":", esc_char="\\", debug=False):
+    xfobj = XFStyle()
+    if num_format_str is not None:
+        xfobj.num_format_str = num_format_str
+    if strg_to_parse:
+        _parse_strg_to_obj(strg_to_parse, xfobj, xf_dict,
+            field_sep=field_sep, line_sep=line_sep, intro_sep=intro_sep, esc_char=esc_char, debug=debug)
+    return xfobj
diff --git a/tablib/packages/xlwt3/UnicodeUtils.py b/tablib/packages/xlwt3/UnicodeUtils.py
new file mode 100644
index 0000000..204d13c
--- /dev/null
+++ b/tablib/packages/xlwt3/UnicodeUtils.py
@@ -0,0 +1,79 @@
+'''
+From BIFF8 on, strings are always stored using UTF-16LE  text encoding. The
+character  array  is  a  sequence  of  16-bit  values4.  Additionally it is
+possible  to  use  a  compressed  format, which omits the high bytes of all
+characters, if they are all zero.
+
+The following tables describe the standard format of the entire string, but
+in many records the strings differ from this format. This will be mentioned
+separately. It is possible (but not required) to store Rich-Text formatting
+information  and  Asian  phonetic information inside a Unicode string. This
+results  in  four  different  ways  to  store a string. The character array
+is not zero-terminated.
+
+The  string  consists  of  the  character count (as usual an 8-bit value or
+a  16-bit value), option flags, the character array and optional formatting
+information.  If the string is empty, sometimes the option flags field will
+not occur. This is mentioned at the respective place.
+
+Offset  Size    Contents
+0       1 or 2  Length of the string (character count, ln)
+1 or 2  1       Option flags:
+                  Bit   Mask Contents
+                  0     01H  Character compression (ccompr):
+                               0 = Compressed (8-bit characters)
+                               1 = Uncompressed (16-bit characters)
+                  2     04H  Asian phonetic settings (phonetic):
+                               0 = Does not contain Asian phonetic settings
+                               1 = Contains Asian phonetic settings
+                  3     08H  Rich-Text settings (richtext):
+                               0 = Does not contain Rich-Text settings
+                               1 = Contains Rich-Text settings
+[2 or 3] 2      (optional, only if richtext=1) Number of Rich-Text formatting runs (rt)
+[var.]   4      (optional, only if phonetic=1) Size of Asian phonetic settings block (in bytes, sz)
+var.     ln or
+         2·ln   Character array (8-bit characters or 16-bit characters, dependent on ccompr)
+[var.]   4·rt   (optional, only if richtext=1) List of rt formatting runs
+[var.]   sz     (optional, only if phonetic=1) Asian Phonetic Settings Block
+'''
+
+
+from struct import pack
+
+def upack2(s, encoding='ascii'):
+    # If not unicode, make it so.
+    if isinstance(s, str):
+        us = s
+    else:
+        us = str(s, encoding)
+    # Limit is based on number of content characters
+    # (not on number of bytes in packed result)
+    len_us = len(us)
+    if len_us > 65535:
+        raise Exception('String longer than 65535 characters')
+    try:
+        encs = us.encode('latin1')
+        # Success here means all chars are in U+0000 to U+00FF
+        # inclusive, meaning that we can use "compressed format".
+        flag = 0
+    except UnicodeEncodeError:
+        encs = us.encode('utf_16_le')
+        flag = 1
+    return pack('<HB', len_us, flag) + encs
+
+def upack1(s, encoding='ascii'):
+    # Same as upack2(), but with a one-byte length field.
+    if isinstance(s, str):
+        us = s
+    else:
+        us = str(s, encoding)
+    len_us = len(us)
+    if len_us > 255:
+        raise Exception('String longer than 255 characters')
+    try:
+        encs = us.encode('latin1')
+        flag = 0
+    except UnicodeEncodeError:
+        encs = us.encode('utf_16_le')
+        flag = 1
+    return pack('<BB', len_us, flag) + encs
diff --git a/tablib/packages/xlwt3/Utils.py b/tablib/packages/xlwt3/Utils.py
new file mode 100644
index 0000000..3509f03
--- /dev/null
+++ b/tablib/packages/xlwt3/Utils.py
@@ -0,0 +1,196 @@
+# pyXLWriter: A library for generating Excel Spreadsheets
+# Copyright (c) 2004 Evgeny Filatov <fufff@users.sourceforge.net>
+# Copyright (c) 2002-2004 John McNamara (Perl Spreadsheet::WriteExcel)
+#
+# This library is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#----------------------------------------------------------------------------
+# This module was written/ported from PERL Spreadsheet::WriteExcel module
+# The author of the PERL Spreadsheet::WriteExcel module is John McNamara
+# <jmcnamara@cpan.org>
+#----------------------------------------------------------------------------
+# See the README.txt distributed with pyXLWriter for more details.
+
+# Portions are (C) Roman V. Kiseliov, 2005
+
+
+# Utilities for work with reference to cells and with sheetnames
+
+
+__rev_id__ = """$Id: Utils.py 3844 2009-05-20 01:02:54Z sjmachin $"""
+
+import re
+from struct import pack
+from .ExcelMagic import MAX_ROW, MAX_COL
+
+
+_re_cell_ex = re.compile(r"(\$?)([A-I]?[A-Z])(\$?)(\d+)", re.IGNORECASE)
+_re_row_range = re.compile(r"\$?(\d+):\$?(\d+)")
+_re_col_range = re.compile(r"\$?([A-I]?[A-Z]):\$?([A-I]?[A-Z])", re.IGNORECASE)
+_re_cell_range = re.compile(r"\$?([A-I]?[A-Z]\$?\d+):\$?([A-I]?[A-Z]\$?\d+)", re.IGNORECASE)
+_re_cell_ref = re.compile(r"\$?([A-I]?[A-Z]\$?\d+)", re.IGNORECASE)
+
+
+def col_by_name(colname):
+    """
+    """
+    col = 0
+    pow = 1
+    for i in range(len(colname)-1, -1, -1):
+        ch = colname[i]
+        col += (ord(ch) - ord('A') + 1) * pow
+        pow *= 26
+    return col - 1
+
+
+def cell_to_rowcol(cell):
+    """Convert an Excel cell reference string in A1 notation
+    to numeric row/col notation.
+
+    Returns: row, col, row_abs, col_abs
+
+    """
+    m = _re_cell_ex.match(cell)
+    if not m:
+        raise Exception("Ill-formed single_cell reference: %s" % cell)
+    col_abs, col, row_abs, row = m.groups()
+    row_abs = bool(row_abs)
+    col_abs = bool(col_abs)
+    row = int(row) - 1
+    col = col_by_name(col.upper())
+    return row, col, row_abs, col_abs
+
+
+def cell_to_rowcol2(cell):
+    """Convert an Excel cell reference string in A1 notation
+    to numeric row/col notation.
+
+    Returns: row, col
+
+    """
+    m = _re_cell_ex.match(cell)
+    if not m:
+        raise Exception("Error in cell format")
+    col_abs, col, row_abs, row = m.groups()
+    # Convert base26 column string to number
+    # All your Base are belong to us.
+    row = int(row) - 1
+    col = col_by_name(col.upper())
+    return row, col
+
+
+def rowcol_to_cell(row, col, row_abs=False, col_abs=False):
+    """Convert numeric row/col notation to an Excel cell reference string in
+    A1 notation.
+
+    """
+    assert 0 <= row < MAX_ROW # MAX_ROW counts from 1
+    assert 0 <= col < MAX_COL # MAX_COL counts from 1
+    d = col // 26
+    m = col % 26
+    chr1 = ""    # Most significant character in AA1
+    if row_abs:
+        row_abs = '$'
+    else:
+        row_abs = ''
+    if col_abs:
+        col_abs = '$'
+    else:
+        col_abs = ''
+    if d > 0:
+        chr1 = chr(ord('A') + d  - 1)
+    chr2 = chr(ord('A') + m)
+    # Zero index to 1-index
+    return col_abs + chr1 + chr2 + row_abs + str(row + 1)
+
+def rowcol_pair_to_cellrange(row1, col1, row2, col2,
+    row1_abs=False, col1_abs=False, row2_abs=False, col2_abs=False):
+    """Convert two (row,column) pairs
+    into a cell range string in A1:B2 notation.
+
+    Returns: cell range string
+    """
+    assert row1 <= row2
+    assert col1 <= col2
+    return (
+        rowcol_to_cell(row1, col1, row1_abs, col1_abs)
+        + ":"
+        + rowcol_to_cell(row2, col2, row2_abs, col2_abs)
+        )
+
+def cellrange_to_rowcol_pair(cellrange):
+    """Convert cell range string in A1 notation to numeric row/col
+    pair.
+
+    Returns: row1, col1, row2, col2
+
+    """
+    cellrange = cellrange.upper()
+    # Convert a row range: '1:3'
+    res = _re_row_range.match(cellrange)
+    if res:
+        row1 = int(res.group(1)) - 1
+        col1 = 0
+        row2 = int(res.group(2)) - 1
+        col2 = -1
+        return row1, col1, row2, col2
+    # Convert a column range: 'A:A' or 'B:G'.
+    # A range such as A:A is equivalent to A1:A16384, so add rows as required
+    res = _re_col_range.match(cellrange)
+    if res:
+        col1 = col_by_name(res.group(1).upper())
+        row1 = 0
+        col2 = col_by_name(res.group(2).upper())
+        row2 = -1
+        return row1, col1, row2, col2
+    # Convert a cell range: 'A1:B7'
+    res = _re_cell_range.match(cellrange)
+    if res:
+        row1, col1 = cell_to_rowcol2(res.group(1))
+        row2, col2 = cell_to_rowcol2(res.group(2))
+        return row1, col1, row2, col2
+    # Convert a cell reference: 'A1' or 'AD2000'
+    res = _re_cell_ref.match(cellrange)
+    if res:
+        row1, col1 = cell_to_rowcol2(res.group(1))
+        return row1, col1, row1, col1
+    raise Exception("Unknown cell reference %s" % (cell))
+
+
+def cell_to_packed_rowcol(cell):
+    """ pack row and column into the required 4 byte format """
+    row, col, row_abs, col_abs = cell_to_rowcol(cell)
+    if col >= MAX_COL:
+        raise Exception("Column %s greater than IV in formula" % cell)
+    if row >= MAX_ROW: # this for BIFF8. for BIFF7 available 2^14
+        raise Exception("Row %s greater than %d in formula" % (cell, MAX_ROW))
+    col |= int(not row_abs) << 15
+    col |= int(not col_abs) << 14
+    return row, col
+
+# === sheetname functions ===
+
+def valid_sheet_name(sheet_name):
+    if sheet_name == "" or sheet_name[0] == "'" or len(sheet_name) > 31:
+        return False
+    for c in sheet_name:
+        if c in "[]:\\?/*\x00":
+            return False
+    return True
+
+def quote_sheet_name(unquoted_sheet_name):
+    if not valid_sheet_name(unquoted_sheet_name):
+        raise Exception(
+            'attempt to quote an invalid worksheet name %r' % unquoted_sheet_name)
+    return "'" + unquoted_sheet_name.replace("'", "''") + "'"
diff --git a/tablib/packages/xlwt3/Workbook.py b/tablib/packages/xlwt3/Workbook.py
new file mode 100644
index 0000000..ba42e6b
--- /dev/null
+++ b/tablib/packages/xlwt3/Workbook.py
@@ -0,0 +1,635 @@
+'''
+Record Order in BIFF8
+  Workbook Globals Substream
+      BOF Type = workbook globals
+      Interface Header
+      MMS
+      Interface End
+      WRITEACCESS
+      CODEPAGE
+      DSF
+      TABID
+      FNGROUPCOUNT
+      Workbook Protection Block
+            WINDOWPROTECT
+            PROTECT
+            PASSWORD
+            PROT4REV
+            PROT4REVPASS
+      BACKUP
+      HIDEOBJ
+      WINDOW1
+      DATEMODE
+      PRECISION
+      REFRESHALL
+      BOOKBOOL
+      FONT +
+      FORMAT *
+      XF +
+      STYLE +
+    ? PALETTE
+      USESELFS
+
+      BOUNDSHEET +
+
+      COUNTRY
+    ? Link Table
+      SST
+      ExtSST
+      EOF
+'''
+
+from . import BIFFRecords
+from . import Style
+
+class Workbook(object):
+
+    #################################################################
+    ## Constructor
+    #################################################################
+    def __init__(self, encoding='ascii', style_compression=0):
+        self.encoding = encoding
+        self.__owner = 'None'
+        self.__country_code = None # 0x07 is Russia :-)
+        self.__wnd_protect = 0
+        self.__obj_protect = 0
+        self.__protect = 0
+        self.__backup_on_save = 0
+        # for WINDOW1 record
+        self.__hpos_twips = 0x01E0
+        self.__vpos_twips = 0x005A
+        self.__width_twips = 0x3FCF
+        self.__height_twips = 0x2A4E
+
+        self.__active_sheet = 0
+        self.__first_tab_index = 0
+        self.__selected_tabs = 0x01
+        self.__tab_width_twips = 0x0258
+
+        self.__wnd_hidden = 0
+        self.__wnd_mini = 0
+        self.__hscroll_visible = 1
+        self.__vscroll_visible = 1
+        self.__tabs_visible = 1
+
+        self.__styles = Style.StyleCollection(style_compression)
+
+        self.__dates_1904 = 0
+        self.__use_cell_values = 1
+
+        self.__sst = BIFFRecords.SharedStringTable(self.encoding)
+
+        self.__worksheets = []
+        self.__worksheet_idx_from_name = {}
+        self.__sheet_refs = {}
+        self._supbook_xref = {}
+        self._xcall_xref = {}
+        self._ownbook_supbookx = None
+        self._ownbook_supbook_ref = None
+        self._xcall_supbookx = None
+        self._xcall_supbook_ref = None
+
+
+
+    #################################################################
+    ## Properties, "getters", "setters"
+    #################################################################
+
+    def get_style_stats(self):
+        return self.__styles.stats[:]
+
+    def set_owner(self, value):
+        self.__owner = value
+
+    def get_owner(self):
+        return self.__owner
+
+    owner = property(get_owner, set_owner)
+
+    #################################################################
+
+    def set_country_code(self, value):
+        self.__country_code = value
+
+    def get_country_code(self):
+        return self.__country_code
+
+    country_code = property(get_country_code, set_country_code)
+
+    #################################################################
+
+    def set_wnd_protect(self, value):
+        self.__wnd_protect = int(value)
+
+    def get_wnd_protect(self):
+        return bool(self.__wnd_protect)
+
+    wnd_protect = property(get_wnd_protect, set_wnd_protect)
+
+    #################################################################
+
+    def set_obj_protect(self, value):
+        self.__obj_protect = int(value)
+
+    def get_obj_protect(self):
+        return bool(self.__obj_protect)
+
+    obj_protect = property(get_obj_protect, set_obj_protect)
+
+    #################################################################
+
+    def set_protect(self, value):
+        self.__protect = int(value)
+
+    def get_protect(self):
+        return bool(self.__protect)
+
+    protect = property(get_protect, set_protect)
+
+    #################################################################
+
+    def set_backup_on_save(self, value):
+        self.__backup_on_save = int(value)
+
+    def get_backup_on_save(self):
+        return bool(self.__backup_on_save)
+
+    backup_on_save = property(get_backup_on_save, set_backup_on_save)
+
+    #################################################################
+
+    def set_hpos(self, value):
+        self.__hpos_twips = value & 0xFFFF
+
+    def get_hpos(self):
+        return self.__hpos_twips
+
+    hpos = property(get_hpos, set_hpos)
+
+    #################################################################
+
+    def set_vpos(self, value):
+        self.__vpos_twips = value & 0xFFFF
+
+    def get_vpos(self):
+        return self.__vpos_twips
+
+    vpos = property(get_vpos, set_vpos)
+
+    #################################################################
+
+    def set_width(self, value):
+        self.__width_twips = value & 0xFFFF
+
+    def get_width(self):
+        return self.__width_twips
+
+    width = property(get_width, set_width)
+
+    #################################################################
+
+    def set_height(self, value):
+        self.__height_twips = value & 0xFFFF
+
+    def get_height(self):
+        return self.__height_twips
+
+    height = property(get_height, set_height)
+
+    #################################################################
+
+    def set_active_sheet(self, value):
+        self.__active_sheet = value & 0xFFFF
+        self.__first_tab_index = self.__active_sheet
+
+    def get_active_sheet(self):
+        return self.__active_sheet
+
+    active_sheet = property(get_active_sheet, set_active_sheet)
+
+    #################################################################
+
+    def set_tab_width(self, value):
+        self.__tab_width_twips = value & 0xFFFF
+
+    def get_tab_width(self):
+        return self.__tab_width_twips
+
+    tab_width = property(get_tab_width, set_tab_width)
+
+    #################################################################
+
+    def set_wnd_visible(self, value):
+        self.__wnd_hidden = int(not value)
+
+    def get_wnd_visible(self):
+        return not bool(self.__wnd_hidden)
+
+    wnd_visible = property(get_wnd_visible, set_wnd_visible)
+
+    #################################################################
+
+    def set_wnd_mini(self, value):
+        self.__wnd_mini = int(value)
+
+    def get_wnd_mini(self):
+        return bool(self.__wnd_mini)
+
+    wnd_mini = property(get_wnd_mini, set_wnd_mini)
+
+    #################################################################
+
+    def set_hscroll_visible(self, value):
+        self.__hscroll_visible = int(value)
+
+    def get_hscroll_visible(self):
+        return bool(self.__hscroll_visible)
+
+    hscroll_visible = property(get_hscroll_visible, set_hscroll_visible)
+
+    #################################################################
+
+    def set_vscroll_visible(self, value):
+        self.__vscroll_visible = int(value)
+
+    def get_vscroll_visible(self):
+        return bool(self.__vscroll_visible)
+
+    vscroll_visible = property(get_vscroll_visible, set_vscroll_visible)
+
+    #################################################################
+
+    def set_tabs_visible(self, value):
+        self.__tabs_visible = int(value)
+
+    def get_tabs_visible(self):
+        return bool(self.__tabs_visible)
+
+    tabs_visible = property(get_tabs_visible, set_tabs_visible)
+
+    #################################################################
+
+    def set_dates_1904(self, value):
+        self.__dates_1904 = int(value)
+
+    def get_dates_1904(self):
+        return bool(self.__dates_1904)
+
+    dates_1904 = property(get_dates_1904, set_dates_1904)
+
+    #################################################################
+
+    def set_use_cell_values(self, value):
+        self.__use_cell_values = int(value)
+
+    def get_use_cell_values(self):
+        return bool(self.__use_cell_values)
+
+    use_cell_values = property(get_use_cell_values, set_use_cell_values)
+
+    #################################################################
+
+    def get_default_style(self):
+        return self.__styles.default_style
+
+    default_style = property(get_default_style)
+
+    ##################################################################
+    ## Methods
+    ##################################################################
+
+    def add_style(self, style):
+        return self.__styles.add(style)
+
+    def add_str(self, s):
+        return self.__sst.add_str(s)
+
+    def del_str(self, sst_idx):
+        self.__sst.del_str(sst_idx)
+
+    def str_index(self, s):
+        return self.__sst.str_index(s)
+
+    def add_sheet(self, sheetname, cell_overwrite_ok=False):
+        from . import Worksheet, Utils
+        if not isinstance(sheetname, str):
+            sheetname = sheetname.decode(self.encoding)
+        if not Utils.valid_sheet_name(sheetname):
+            raise Exception("invalid worksheet name %r" % sheetname)
+        lower_name = sheetname.lower()
+        if lower_name in self.__worksheet_idx_from_name:
+            raise Exception("duplicate worksheet name %r" % sheetname)
+        self.__worksheet_idx_from_name[lower_name] = len(self.__worksheets)
+        self.__worksheets.append(Worksheet(sheetname, self, cell_overwrite_ok))
+        return self.__worksheets[-1]
+
+    def get_sheet(self, sheetnum):
+        return self.__worksheets[sheetnum]
+
+    def raise_bad_sheetname(self, sheetname):
+        raise Exception("Formula: unknown sheet name %s" % sheetname)
+
+    def convert_sheetindex(self, strg_ref, n_sheets):
+        idx = int(strg_ref)
+        if 0 <= idx < n_sheets:
+            return idx
+        msg = "Formula: sheet index (%s) >= number of sheets (%d)" % (strg_ref, n_sheets)
+        raise Exception(msg)
+
+    def _get_supbook_index(self, tag):
+        if tag in self._supbook_xref:
+            return self._supbook_xref[tag]
+        self._supbook_xref[tag] = idx = len(self._supbook_xref)
+        return idx
+
+    def setup_ownbook(self):
+        self._ownbook_supbookx = self._get_supbook_index(('ownbook', 0))
+        self._ownbook_supbook_ref = None
+        reference = (self._ownbook_supbookx, 0xFFFE, 0xFFFE)
+        if reference in self.__sheet_refs:
+            raise Exception("can't happen")
+        self.__sheet_refs[reference] = self._ownbook_supbook_ref = len(self.__sheet_refs)
+
+    def setup_xcall(self):
+        self._xcall_supbookx = self._get_supbook_index(('xcall', 0))
+        self._xcall_supbook_ref = None
+        reference = (self._xcall_supbookx, 0xFFFE, 0xFFFE)
+        if reference in self.__sheet_refs:
+            raise Exception("can't happen")
+        self.__sheet_refs[reference] = self._xcall_supbook_ref = len(self.__sheet_refs)
+
+    def add_sheet_reference(self, formula):
+        patches = []
+        n_sheets = len(self.__worksheets)
+        sheet_refs, xcall_refs = formula.get_references()
+
+        for ref0, ref1, offset in sheet_refs:
+            if not ref0.isdigit():
+                try:
+                    ref0n = self.__worksheet_idx_from_name[ref0.lower()]
+                except KeyError:
+                    self.raise_bad_sheetname(ref0)
+            else:
+                ref0n = self.convert_sheetindex(ref0, n_sheets)
+            if ref1 == ref0:
+                ref1n = ref0n
+            elif not ref1.isdigit():
+                try:
+                    ref1n = self.__worksheet_idx_from_name[ref1.lower()]
+                except KeyError:
+                    self.raise_bad_sheetname(ref1)
+            else:
+                ref1n = self.convert_sheetindex(ref1, n_sheets)
+            if ref1n < ref0n:
+                msg = "Formula: sheets out of order; %r:%r -> (%d, %d)" \
+                    % (ref0, ref1, ref0n, ref1n)
+                raise Exception(msg)
+            if self._ownbook_supbookx is None:
+                self.setup_ownbook()
+            reference = (self._ownbook_supbookx, ref0n, ref1n)
+            if reference in self.__sheet_refs:
+                patches.append((offset, self.__sheet_refs[reference]))
+            else:
+                nrefs = len(self.__sheet_refs)
+                if nrefs > 65535:
+                    raise Exception('More than 65536 inter-sheet references')
+                self.__sheet_refs[reference] = nrefs
+                patches.append((offset, nrefs))
+
+        for funcname, offset in xcall_refs:
+            if self._ownbook_supbookx is None:
+                self.setup_ownbook()
+            if self._xcall_supbookx is None:
+                self.setup_xcall()
+            # print funcname, self._supbook_xref
+            patches.append((offset, self._xcall_supbook_ref))
+            if not isinstance(funcname, str):
+                funcname = funcname.decode(self.encoding)
+            if funcname in self._xcall_xref:
+                idx = self._xcall_xref[funcname]
+            else:
+                self._xcall_xref[funcname] = idx = len(self._xcall_xref)
+            patches.append((offset + 2, idx + 1))
+
+        formula.patch_references(patches)
+
+    ##################################################################
+    ## BIFF records generation
+    ##################################################################
+
+    def __bof_rec(self):
+        return BIFFRecords.Biff8BOFRecord(BIFFRecords.Biff8BOFRecord.BOOK_GLOBAL).get()
+
+    def __eof_rec(self):
+        return BIFFRecords.EOFRecord().get()
+
+    def __intf_hdr_rec(self):
+        return BIFFRecords.InteraceHdrRecord().get()
+
+    def __intf_end_rec(self):
+        return BIFFRecords.InteraceEndRecord().get()
+
+    def __intf_mms_rec(self):
+        return BIFFRecords.MMSRecord().get()
+
+    def __write_access_rec(self):
+        return BIFFRecords.WriteAccessRecord(self.__owner).get()
+
+    def __wnd_protect_rec(self):
+        return BIFFRecords.WindowProtectRecord(self.__wnd_protect).get()
+
+    def __obj_protect_rec(self):
+        return BIFFRecords.ObjectProtectRecord(self.__obj_protect).get()
+
+    def __protect_rec(self):
+        return BIFFRecords.ProtectRecord(self.__protect).get()
+
+    def __password_rec(self):
+        return BIFFRecords.PasswordRecord().get()
+
+    def __prot4rev_rec(self):
+        return BIFFRecords.Prot4RevRecord().get()
+
+    def __prot4rev_pass_rec(self):
+        return BIFFRecords.Prot4RevPassRecord().get()
+
+    def __backup_rec(self):
+        return BIFFRecords.BackupRecord(self.__backup_on_save).get()
+
+    def __hide_obj_rec(self):
+        return BIFFRecords.HideObjRecord().get()
+
+    def __window1_rec(self):
+        flags = 0
+        flags |= (self.__wnd_hidden) << 0
+        flags |= (self.__wnd_mini) << 1
+        flags |= (self.__hscroll_visible) << 3
+        flags |= (self.__vscroll_visible) << 4
+        flags |= (self.__tabs_visible) << 5
+
+        return BIFFRecords.Window1Record(self.__hpos_twips, self.__vpos_twips,
+                                self.__width_twips, self.__height_twips,
+                                flags,
+                                self.__active_sheet, self.__first_tab_index,
+                                self.__selected_tabs, self.__tab_width_twips).get()
+
+    def __codepage_rec(self):
+        return BIFFRecords.CodepageBiff8Record().get()
+
+    def __country_rec(self):
+        if not self.__country_code:
+            return b''
+        return BIFFRecords.CountryRecord(self.__country_code, self.__country_code).get()
+
+    def __dsf_rec(self):
+        return BIFFRecords.DSFRecord().get()
+
+    def __tabid_rec(self):
+        return BIFFRecords.TabIDRecord(len(self.__worksheets)).get()
+
+    def __fngroupcount_rec(self):
+        return BIFFRecords.FnGroupCountRecord().get()
+
+    def __datemode_rec(self):
+        return BIFFRecords.DateModeRecord(self.__dates_1904).get()
+
+    def __precision_rec(self):
+        return BIFFRecords.PrecisionRecord(self.__use_cell_values).get()
+
+    def __refresh_all_rec(self):
+        return BIFFRecords.RefreshAllRecord().get()
+
+    def __bookbool_rec(self):
+        return BIFFRecords.BookBoolRecord().get()
+
+    def __all_fonts_num_formats_xf_styles_rec(self):
+        return self.__styles.get_biff_data()
+
+    def __palette_rec(self):
+        result = b''
+        return result
+
+    def __useselfs_rec(self):
+        return BIFFRecords.UseSelfsRecord().get()
+
+    def __boundsheets_rec(self, data_len_before, data_len_after, sheet_biff_lens):
+        #  .................................
+        # BOUNDSEHEET0
+        # BOUNDSEHEET1
+        # BOUNDSEHEET2
+        # ..................................
+        # WORKSHEET0
+        # WORKSHEET1
+        # WORKSHEET2
+        boundsheets_len = 0
+        for sheet in self.__worksheets:
+            boundsheets_len += len(BIFFRecords.BoundSheetRecord(
+                0x00, sheet.visibility, sheet.name, self.encoding
+                ).get())
+
+        start = data_len_before + boundsheets_len + data_len_after
+
+        result = b''
+        for sheet_biff_len,  sheet in zip(sheet_biff_lens, self.__worksheets):
+            result += BIFFRecords.BoundSheetRecord(
+                start, sheet.visibility, sheet.name, self.encoding
+                ).get()
+            start += sheet_biff_len
+        return result
+
+    def __all_links_rec(self):
+        pieces = []
+        temp = [(idx, tag) for tag, idx in list(self._supbook_xref.items())]
+        temp.sort()
+        for idx, tag in temp:
+            stype, snum = tag
+            if stype == 'ownbook':
+                rec = BIFFRecords.InternalReferenceSupBookRecord(len(self.__worksheets)).get()
+                pieces.append(rec)
+            elif stype == 'xcall':
+                rec = BIFFRecords.XcallSupBookRecord().get()
+                pieces.append(rec)
+                temp = [(idx, name) for name, idx in list(self._xcall_xref.items())]
+                temp.sort()
+                for idx, name in temp:
+                    rec = BIFFRecords.ExternnameRecord(
+                        options=0, index=0, name=name, fmla='\x02\x00\x1c\x17').get()
+                    pieces.append(rec)
+            else:
+                raise Exception('unknown supbook stype %r' % stype)
+        if len(self.__sheet_refs) > 0:
+            # get references in index order
+            temp = [(idx, ref) for ref, idx in list(self.__sheet_refs.items())]
+            temp.sort()
+            temp = [ref for idx, ref in temp]
+            externsheet_record = BIFFRecords.ExternSheetRecord(temp).get()
+            pieces.append(externsheet_record)
+        return b''.join(pieces)
+
+    def __sst_rec(self):
+        return self.__sst.get_biff_record()
+
+    def __ext_sst_rec(self, abs_stream_pos):
+        return b''
+        #return BIFFRecords.ExtSSTRecord(abs_stream_pos, self.sst_record.str_placement,
+        #self.sst_record.portions_len).get()
+
+    def get_biff_data(self):
+        before = b''
+        before += self.__bof_rec()
+        before += self.__intf_hdr_rec()
+        before += self.__intf_mms_rec()
+        before += self.__intf_end_rec()
+        before += self.__write_access_rec()
+        before += self.__codepage_rec()
+        before += self.__dsf_rec()
+        before += self.__tabid_rec()
+        before += self.__fngroupcount_rec()
+        before += self.__wnd_protect_rec()
+        before += self.__protect_rec()
+        before += self.__obj_protect_rec()
+        before += self.__password_rec()
+        before += self.__prot4rev_rec()
+        before += self.__prot4rev_pass_rec()
+        before += self.__backup_rec()
+        before += self.__hide_obj_rec()
+        before += self.__window1_rec()
+        before += self.__datemode_rec()
+        before += self.__precision_rec()
+        before += self.__refresh_all_rec()
+        before += self.__bookbool_rec()
+        before += self.__all_fonts_num_formats_xf_styles_rec()
+        before += self.__palette_rec()
+        before += self.__useselfs_rec()
+
+        country = self.__country_rec()
+        all_links = self.__all_links_rec()
+
+        shared_str_table   = self.__sst_rec()
+        after = country + all_links + shared_str_table
+
+        ext_sst = self.__ext_sst_rec(0) # need fake cause we need calc stream pos
+        eof = self.__eof_rec()
+
+        self.__worksheets[self.__active_sheet].selected = True
+        sheets = b''
+        sheet_biff_lens = []
+        for sheet in self.__worksheets:
+            data = sheet.get_biff_data()
+            sheets += data
+            sheet_biff_lens.append(len(data))
+
+        bundlesheets = self.__boundsheets_rec(len(before), len(after)+len(ext_sst)+len(eof), sheet_biff_lens)
+
+        sst_stream_pos = len(before) + len(bundlesheets) + len(country)  + len(all_links)
+        ext_sst = self.__ext_sst_rec(sst_stream_pos)
+
+        return before + bundlesheets + after + ext_sst + eof + sheets
+
+    def save(self, filename):
+        from . import CompoundDoc
+
+        doc = CompoundDoc.XlsDoc()
+        doc.save(filename, self.get_biff_data())
+
+
diff --git a/tablib/packages/xlwt3/Worksheet.py b/tablib/packages/xlwt3/Worksheet.py
new file mode 100644
index 0000000..f358dd6
--- /dev/null
+++ b/tablib/packages/xlwt3/Worksheet.py
@@ -0,0 +1,1296 @@
+'''
+            BOF
+            UNCALCED
+            INDEX
+            Calculation Settings Block
+            PRINTHEADERS
+            PRINTGRIDLINES
+            GRIDSET
+            GUTS
+            DEFAULTROWHEIGHT
+            WSBOOL
+            Page Settings Block
+            Worksheet Protection Block
+            DEFCOLWIDTH
+            COLINFO
+            SORT
+            DIMENSIONS
+            Row Blocks
+            WINDOW2
+            SCL
+            PANE
+            SELECTION
+            STANDARDWIDTH
+            MERGEDCELLS
+            LABELRANGES
+            PHONETIC
+            Conditional Formatting Table
+            Hyperlink Table
+            Data Validity Table
+            SHEETLAYOUT (BIFF8X only)
+            SHEETPROTECTION (BIFF8X only)
+            RANGEPROTECTION (BIFF8X only)
+            EOF
+'''
+
+from . import BIFFRecords
+from . import Bitmap
+from . import Formatting
+from . import Style
+import tempfile
+
+
+class Worksheet(object):
+    from .Workbook import Workbook
+
+    #################################################################
+    ## Constructor
+    #################################################################
+    def __init__(self, sheetname, parent_book, cell_overwrite_ok=False):
+        from . import Row
+        self.Row = Row #(to_py3): Row.Row -> Row
+
+        from . import Column
+        self.Column = Column #(to_py3): Column.Column -> Column
+
+        self.__name = sheetname
+        self.__parent = parent_book
+        self._cell_overwrite_ok = cell_overwrite_ok
+
+        self.__rows = {}
+        self.__cols = {}
+        self.__merged_ranges = []
+        self.__bmp_rec = b''
+
+        self.__show_formulas = 0
+        self.__show_grid = 1
+        self.__show_headers = 1
+        self.__panes_frozen = 0
+        ### self.__show_empty_as_zero = 1 ### deprecated with extreme prejudice 2009-05-19
+        self.show_zero_values = 1
+        self.__auto_colour_grid = 1
+        self.__cols_right_to_left = 0
+        self.__show_outline = 1
+        self.__remove_splits = 0
+        self.__selected = 0
+        # RED HERRING ALERT: "sheet_visible" is a clone of the "selected" attribute.
+        # Typically a workbook created by the Excel UI will have one sheet
+        # (the sheet that was selected when the user saved it)
+        # with both bits set to 1, and all other sheets will have both
+        # bits set to 0. The true visibility of the sheet is found in the "visibility"
+        # attribute obtained from the BOUNDSHEET record.
+        self.__sheet_visible = 0
+        self.__page_preview = 0
+
+        self.__first_visible_row = 0
+        self.__first_visible_col = 0
+        self.__grid_colour = 0x40
+        self.__preview_magn = 60 # percent
+        self.__normal_magn = 100 # percent
+
+        self.visibility = 0 # from/to BOUNDSHEET record.
+
+        self.__vert_split_pos = None
+        self.__horz_split_pos = None
+        self.__vert_split_first_visible = None
+        self.__horz_split_first_visible = None
+        self.__split_active_pane = None
+
+        self.__row_gut_width = 0
+        self.__col_gut_height = 0
+
+        self.__show_auto_page_breaks = 1
+        self.__dialogue_sheet = 0
+        self.__auto_style_outline = 0
+        self.__outline_below = 0
+        self.__outline_right = 0
+        self.__fit_num_pages = 0
+        self.__show_row_outline = 1
+        self.__show_col_outline = 1
+        self.__alt_expr_eval = 0
+        self.__alt_formula_entries = 0
+
+        self.__row_default_height = 0x00FF
+        self.row_default_height_mismatch = 0
+        self.row_default_hidden = 0
+        self.row_default_space_above = 0
+        self.row_default_space_below = 0
+
+        self.__col_default_width = 0x0008
+
+        self.__calc_mode = 1
+        self.__calc_count = 0x0064
+        self.__RC_ref_mode = 1
+        self.__iterations_on = 0
+        self.__delta = 0.001
+        self.__save_recalc = 0
+
+        self.__print_headers = 0
+        self.__print_grid = 0
+        self.__grid_set = 1
+        self.__vert_page_breaks = []
+        self.__horz_page_breaks = []
+        self.__header_str = '&P'
+        self.__footer_str = '&F'
+        self.__print_centered_vert = 0
+        self.__print_centered_horz = 1
+        self.__left_margin = 0.3 #0.5
+        self.__right_margin = 0.3 #0.5
+        self.__top_margin = 0.61 #1.0
+        self.__bottom_margin = 0.37 #1.0
+        self.__paper_size_code = 9 # A4
+        self.__print_scaling = 100
+        self.__start_page_number = 1
+        self.__fit_width_to_pages = 1
+        self.__fit_height_to_pages = 1
+        self.__print_in_rows = 1
+        self.__portrait = 1
+        self.__print_not_colour = 0
+        self.__print_draft = 0
+        self.__print_notes = 0
+        self.__print_notes_at_end = 0
+        self.__print_omit_errors = 0
+        self.__print_hres = 0x012C # 300 dpi
+        self.__print_vres = 0x012C # 300 dpi
+        self.__header_margin = 0.1
+        self.__footer_margin = 0.1
+        self.__copies_num = 1
+
+        self.__wnd_protect = 0
+        self.__obj_protect = 0
+        self.__protect = 0
+        self.__scen_protect = 0
+        self.__password = b''
+
+        self.last_used_row = 0
+        self.first_used_row = 65535
+        self.last_used_col = 0
+        self.first_used_col = 255
+        self.row_tempfile = None
+        self.__flushed_rows = {}
+        self.__row_visible_levels = 0
+
+    #################################################################
+    ## Properties, "getters", "setters"
+    #################################################################
+
+    def set_name(self, value):
+        self.__name = value
+
+    def get_name(self):
+        return self.__name
+
+    name = property(get_name, set_name)
+
+    #################################################################
+
+    def get_parent(self):
+        return self.__parent
+
+    parent = property(get_parent)
+
+    #################################################################
+
+    def get_rows(self):
+        return self.__rows
+
+    rows = property(get_rows)
+
+    #################################################################
+
+    def get_cols(self):
+        return self.__cols
+
+    cols = property(get_cols)
+
+    #################################################################
+
+    def get_merged_ranges(self):
+        return self.__merged_ranges
+
+    merged_ranges = property(get_merged_ranges)
+
+    #################################################################
+
+    def get_bmp_rec(self):
+        return self.__bmp_rec
+
+    bmp_rec = property(get_bmp_rec)
+
+    #################################################################
+
+    def set_show_formulas(self, value):
+        self.__show_formulas = int(value)
+
+    def get_show_formulas(self):
+        return bool(self.__show_formulas)
+
+    show_formulas = property(get_show_formulas, set_show_formulas)
+
+    #################################################################
+
+    def set_show_grid(self, value):
+        self.__show_grid = int(value)
+
+    def get_show_grid(self):
+        return bool(self.__show_grid)
+
+    show_grid = property(get_show_grid, set_show_grid)
+
+    #################################################################
+
+    def set_show_headers(self, value):
+        self.__show_headers = int(value)
+
+    def get_show_headers(self):
+        return bool(self.__show_headers)
+
+    show_headers = property(get_show_headers, set_show_headers)
+
+    #################################################################
+
+    def set_panes_frozen(self, value):
+        self.__panes_frozen = int(value)
+
+    def get_panes_frozen(self):
+        return bool(self.__panes_frozen)
+
+    panes_frozen = property(get_panes_frozen, set_panes_frozen)
+
+    #################################################################
+
+    ### def set_show_empty_as_zero(self, value):
+    ###     self.__show_empty_as_zero = int(value)
+
+    ### def get_show_empty_as_zero(self):
+    ###     return bool(self.__show_empty_as_zero)
+
+    ### show_empty_as_zero = property(get_show_empty_as_zero, set_show_empty_as_zero)
+
+    #################################################################
+
+    def set_auto_colour_grid(self, value):
+        self.__auto_colour_grid = int(value)
+
+    def get_auto_colour_grid(self):
+        return bool(self.__auto_colour_grid)
+
+    auto_colour_grid = property(get_auto_colour_grid, set_auto_colour_grid)
+
+    #################################################################
+
+    def set_cols_right_to_left(self, value):
+        self.__cols_right_to_left = int(value)
+
+    def get_cols_right_to_left(self):
+        return bool(self.__cols_right_to_left)
+
+    cols_right_to_left = property(get_cols_right_to_left, set_cols_right_to_left)
+
+    #################################################################
+
+    def set_show_outline(self, value):
+        self.__show_outline = int(value)
+
+    def get_show_outline(self):
+        return bool(self.__show_outline)
+
+    show_outline = property(get_show_outline, set_show_outline)
+
+    #################################################################
+
+    def set_remove_splits(self, value):
+        self.__remove_splits = int(value)
+
+    def get_remove_splits(self):
+        return bool(self.__remove_splits)
+
+    remove_splits = property(get_remove_splits, set_remove_splits)
+
+    #################################################################
+
+    def set_selected(self, value):
+        self.__selected = int(value)
+
+    def get_selected(self):
+        return bool(self.__selected)
+
+    selected = property(get_selected, set_selected)
+
+    #################################################################
+
+    def set_sheet_visible(self, value):
+        self.__sheet_visible = int(value)
+
+    def get_sheet_visible(self):
+        return bool(self.__sheet_visible)
+
+    sheet_visible = property(get_sheet_visible, set_sheet_visible)
+
+    #################################################################
+
+    def set_page_preview(self, value):
+        self.__page_preview = int(value)
+
+    def get_page_preview(self):
+        return bool(self.__page_preview)
+
+    page_preview = property(get_page_preview, set_page_preview)
+
+    #################################################################
+
+    def set_first_visible_row(self, value):
+        self.__first_visible_row = value
+
+    def get_first_visible_row(self):
+        return self.__first_visible_row
+
+    first_visible_row = property(get_first_visible_row, set_first_visible_row)
+
+    #################################################################
+
+    def set_first_visible_col(self, value):
+        self.__first_visible_col = value
+
+    def get_first_visible_col(self):
+        return self.__first_visible_col
+
+    first_visible_col = property(get_first_visible_col, set_first_visible_col)
+
+    #################################################################
+
+    def set_grid_colour(self, value):
+        self.__grid_colour = value
+
+    def get_grid_colour(self):
+        return self.__grid_colour
+
+    grid_colour = property(get_grid_colour, set_grid_colour)
+
+    #################################################################
+
+    def set_preview_magn(self, value):
+        self.__preview_magn = value
+
+    def get_preview_magn(self):
+        return self.__preview_magn
+
+    preview_magn = property(get_preview_magn, set_preview_magn)
+
+    #################################################################
+
+    def set_normal_magn(self, value):
+        self.__normal_magn = value
+
+    def get_normal_magn(self):
+        return self.__normal_magn
+
+    normal_magn = property(get_normal_magn, set_normal_magn)
+
+    #################################################################
+
+    def set_vert_split_pos(self, value):
+        self.__vert_split_pos = abs(value)
+
+    def get_vert_split_pos(self):
+        return self.__vert_split_pos
+
+    vert_split_pos = property(get_vert_split_pos, set_vert_split_pos)
+
+    #################################################################
+
+    def set_horz_split_pos(self, value):
+        self.__horz_split_pos = abs(value)
+
+    def get_horz_split_pos(self):
+        return self.__horz_split_pos
+
+    horz_split_pos = property(get_horz_split_pos, set_horz_split_pos)
+
+    #################################################################
+
+    def set_vert_split_first_visible(self, value):
+        self.__vert_split_first_visible = abs(value)
+
+    def get_vert_split_first_visible(self):
+        return self.__vert_split_first_visible
+
+    vert_split_first_visible = property(get_vert_split_first_visible, set_vert_split_first_visible)
+
+    #################################################################
+
+    def set_horz_split_first_visible(self, value):
+        self.__horz_split_first_visible = abs(value)
+
+    def get_horz_split_first_visible(self):
+        return self.__horz_split_first_visible
+
+    horz_split_first_visible = property(get_horz_split_first_visible, set_horz_split_first_visible)
+
+    #################################################################
+
+    #def set_split_active_pane(self, value):
+    #    self.__split_active_pane = abs(value) & 0x03
+    #
+    #def get_split_active_pane(self):
+    #    return self.__split_active_pane
+    #
+    #split_active_pane = property(get_split_active_pane, set_split_active_pane)
+
+    #################################################################
+
+    #def set_row_gut_width(self, value):
+    #    self.__row_gut_width = value
+    #
+    #def get_row_gut_width(self):
+    #    return self.__row_gut_width
+    #
+    #row_gut_width = property(get_row_gut_width, set_row_gut_width)
+    #
+    #################################################################
+    #
+    #def set_col_gut_height(self, value):
+    #    self.__col_gut_height = value
+    #
+    #def get_col_gut_height(self):
+    #    return self.__col_gut_height
+    #
+    #col_gut_height = property(get_col_gut_height, set_col_gut_height)
+    #
+    #################################################################
+
+    def set_show_auto_page_breaks(self, value):
+        self.__show_auto_page_breaks = int(value)
+
+    def get_show_auto_page_breaks(self):
+        return bool(self.__show_auto_page_breaks)
+
+    show_auto_page_breaks = property(get_show_auto_page_breaks, set_show_auto_page_breaks)
+
+    #################################################################
+
+    def set_dialogue_sheet(self, value):
+        self.__dialogue_sheet = int(value)
+
+    def get_dialogue_sheet(self):
+        return bool(self.__dialogue_sheet)
+
+    dialogue_sheet = property(get_dialogue_sheet, set_dialogue_sheet)
+
+    #################################################################
+
+    def set_auto_style_outline(self, value):
+        self.__auto_style_outline = int(value)
+
+    def get_auto_style_outline(self):
+        return bool(self.__auto_style_outline)
+
+    auto_style_outline = property(get_auto_style_outline, set_auto_style_outline)
+
+    #################################################################
+
+    def set_outline_below(self, value):
+        self.__outline_below = int(value)
+
+    def get_outline_below(self):
+        return bool(self.__outline_below)
+
+    outline_below = property(get_outline_below, set_outline_below)
+
+    #################################################################
+
+    def set_outline_right(self, value):
+        self.__outline_right = int(value)
+
+    def get_outline_right(self):
+        return bool(self.__outline_right)
+
+    outline_right = property(get_outline_right, set_outline_right)
+
+    #################################################################
+
+    def set_fit_num_pages(self, value):
+        self.__fit_num_pages = value
+
+    def get_fit_num_pages(self):
+        return self.__fit_num_pages
+
+    fit_num_pages = property(get_fit_num_pages, set_fit_num_pages)
+
+    #################################################################
+
+    def set_show_row_outline(self, value):
+        self.__show_row_outline = int(value)
+
+    def get_show_row_outline(self):
+        return bool(self.__show_row_outline)
+
+    show_row_outline = property(get_show_row_outline, set_show_row_outline)
+
+    #################################################################
+
+    def set_show_col_outline(self, value):
+        self.__show_col_outline = int(value)
+
+    def get_show_col_outline(self):
+        return bool(self.__show_col_outline)
+
+    show_col_outline = property(get_show_col_outline, set_show_col_outline)
+
+    #################################################################
+
+    def set_alt_expr_eval(self, value):
+        self.__alt_expr_eval = int(value)
+
+    def get_alt_expr_eval(self):
+        return bool(self.__alt_expr_eval)
+
+    alt_expr_eval = property(get_alt_expr_eval, set_alt_expr_eval)
+
+    #################################################################
+
+    def set_alt_formula_entries(self, value):
+        self.__alt_formula_entries = int(value)
+
+    def get_alt_formula_entries(self):
+        return bool(self.__alt_formula_entries)
+
+    alt_formula_entries = property(get_alt_formula_entries, set_alt_formula_entries)
+
+    #################################################################
+
+    def set_row_default_height(self, value):
+        self.__row_default_height = value
+
+    def get_row_default_height(self):
+        return self.__row_default_height
+
+    row_default_height = property(get_row_default_height, set_row_default_height)
+
+    #################################################################
+
+    def set_col_default_width(self, value):
+        self.__col_default_width = value
+
+    def get_col_default_width(self):
+        return self.__col_default_width
+
+    col_default_width = property(get_col_default_width, set_col_default_width)
+
+    #################################################################
+
+    def set_calc_mode(self, value):
+        self.__calc_mode = value & 0x03
+
+    def get_calc_mode(self):
+        return self.__calc_mode
+
+    calc_mode = property(get_calc_mode, set_calc_mode)
+
+    #################################################################
+
+    def set_calc_count(self, value):
+        self.__calc_count = value
+
+    def get_calc_count(self):
+        return self.__calc_count
+
+    calc_count = property(get_calc_count, set_calc_count)
+
+    #################################################################
+
+    def set_RC_ref_mode(self, value):
+        self.__RC_ref_mode = int(value)
+
+    def get_RC_ref_mode(self):
+        return bool(self.__RC_ref_mode)
+
+    RC_ref_mode = property(get_RC_ref_mode, set_RC_ref_mode)
+
+    #################################################################
+
+    def set_iterations_on(self, value):
+        self.__iterations_on = int(value)
+
+    def get_iterations_on(self):
+        return bool(self.__iterations_on)
+
+    iterations_on = property(get_iterations_on, set_iterations_on)
+
+    #################################################################
+
+    def set_delta(self, value):
+        self.__delta = value
+
+    def get_delta(self):
+        return self.__delta
+
+    delta = property(get_delta, set_delta)
+
+    #################################################################
+
+    def set_save_recalc(self, value):
+        self.__save_recalc = int(value)
+
+    def get_save_recalc(self):
+        return bool(self.__save_recalc)
+
+    save_recalc = property(get_save_recalc, set_save_recalc)
+
+    #################################################################
+
+    def set_print_headers(self, value):
+        self.__print_headers = int(value)
+
+    def get_print_headers(self):
+        return bool(self.__print_headers)
+
+    print_headers = property(get_print_headers, set_print_headers)
+
+    #################################################################
+
+    def set_print_grid(self, value):
+        self.__print_grid = int(value)
+
+    def get_print_grid(self):
+        return bool(self.__print_grid)
+
+    print_grid = property(get_print_grid, set_print_grid)
+
+    #################################################################
+    #
+    #def set_grid_set(self, value):
+    #    self.__grid_set = int(value)
+    #
+    #def get_grid_set(self):
+    #    return bool(self.__grid_set)
+    #
+    #grid_set = property(get_grid_set, set_grid_set)
+    #
+    #################################################################
+
+    def set_vert_page_breaks(self, value):
+        self.__vert_page_breaks = value
+
+    def get_vert_page_breaks(self):
+        return self.__vert_page_breaks
+
+    vert_page_breaks = property(get_vert_page_breaks, set_vert_page_breaks)
+
+    #################################################################
+
+    def set_horz_page_breaks(self, value):
+        self.__horz_page_breaks = value
+
+    def get_horz_page_breaks(self):
+        return self.__horz_page_breaks
+
+    horz_page_breaks = property(get_horz_page_breaks, set_horz_page_breaks)
+
+    #################################################################
+
+    def set_header_str(self, value):
+        if isinstance(value, str):
+            value = str(value, self.__parent.encoding)
+        self.__header_str = value
+
+    def get_header_str(self):
+        return self.__header_str
+
+    header_str = property(get_header_str, set_header_str)
+
+    #################################################################
+
+    def set_footer_str(self, value):
+        if isinstance(value, str):
+            value = str(value, self.__parent.encoding)
+        self.__footer_str = value
+
+    def get_footer_str(self):
+        return self.__footer_str
+
+    footer_str = property(get_footer_str, set_footer_str)
+
+    #################################################################
+
+    def set_print_centered_vert(self, value):
+        self.__print_centered_vert = int(value)
+
+    def get_print_centered_vert(self):
+        return bool(self.__print_centered_vert)
+
+    print_centered_vert = property(get_print_centered_vert, set_print_centered_vert)
+
+    #################################################################
+
+    def set_print_centered_horz(self, value):
+        self.__print_centered_horz = int(value)
+
+    def get_print_centered_horz(self):
+        return bool(self.__print_centered_horz)
+
+    print_centered_horz = property(get_print_centered_horz, set_print_centered_horz)
+
+    #################################################################
+
+    def set_left_margin(self, value):
+        self.__left_margin = value
+
+    def get_left_margin(self):
+        return self.__left_margin
+
+    left_margin = property(get_left_margin, set_left_margin)
+
+    #################################################################
+
+    def set_right_margin(self, value):
+        self.__right_margin = value
+
+    def get_right_margin(self):
+        return self.__right_margin
+
+    right_margin = property(get_right_margin, set_right_margin)
+
+    #################################################################
+
+    def set_top_margin(self, value):
+        self.__top_margin = value
+
+    def get_top_margin(self):
+        return self.__top_margin
+
+    top_margin = property(get_top_margin, set_top_margin)
+
+    #################################################################
+
+    def set_bottom_margin(self, value):
+        self.__bottom_margin = value
+
+    def get_bottom_margin(self):
+        return self.__bottom_margin
+
+    bottom_margin = property(get_bottom_margin, set_bottom_margin)
+
+    #################################################################
+
+    def set_paper_size_code(self, value):
+        self.__paper_size_code = value
+
+    def get_paper_size_code(self):
+        return self.__paper_size_code
+
+    paper_size_code = property(get_paper_size_code, set_paper_size_code)
+
+    #################################################################
+
+    def set_print_scaling(self, value):
+        self.__print_scaling = value
+
+    def get_print_scaling(self):
+        return self.__print_scaling
+
+    print_scaling = property(get_print_scaling, set_print_scaling)
+
+    #################################################################
+
+    def set_start_page_number(self, value):
+        self.__start_page_number = value
+
+    def get_start_page_number(self):
+        return self.__start_page_number
+
+    start_page_number = property(get_start_page_number, set_start_page_number)
+
+    #################################################################
+
+    def set_fit_width_to_pages(self, value):
+        self.__fit_width_to_pages = value
+
+    def get_fit_width_to_pages(self):
+        return self.__fit_width_to_pages
+
+    fit_width_to_pages = property(get_fit_width_to_pages, set_fit_width_to_pages)
+
+    #################################################################
+
+    def set_fit_height_to_pages(self, value):
+        self.__fit_height_to_pages = value
+
+    def get_fit_height_to_pages(self):
+        return self.__fit_height_to_pages
+
+    fit_height_to_pages = property(get_fit_height_to_pages, set_fit_height_to_pages)
+
+    #################################################################
+
+    def set_print_in_rows(self, value):
+        self.__print_in_rows = int(value)
+
+    def get_print_in_rows(self):
+        return bool(self.__print_in_rows)
+
+    print_in_rows = property(get_print_in_rows, set_print_in_rows)
+
+    #################################################################
+
+    def set_portrait(self, value):
+        self.__portrait = int(value)
+
+    def get_portrait(self):
+        return bool(self.__portrait)
+
+    portrait = property(get_portrait, set_portrait)
+
+    #################################################################
+
+    def set_print_colour(self, value):
+        self.__print_not_colour = int(not value)
+
+    def get_print_colour(self):
+        return not bool(self.__print_not_colour)
+
+    print_colour = property(get_print_colour, set_print_colour)
+
+    #################################################################
+
+    def set_print_draft(self, value):
+        self.__print_draft = int(value)
+
+    def get_print_draft(self):
+        return bool(self.__print_draft)
+
+    print_draft = property(get_print_draft, set_print_draft)
+
+    #################################################################
+
+    def set_print_notes(self, value):
+        self.__print_notes = int(value)
+
+    def get_print_notes(self):
+        return bool(self.__print_notes)
+
+    print_notes = property(get_print_notes, set_print_notes)
+
+    #################################################################
+
+    def set_print_notes_at_end(self, value):
+        self.__print_notes_at_end = int(value)
+
+    def get_print_notes_at_end(self):
+        return bool(self.__print_notes_at_end)
+
+    print_notes_at_end = property(get_print_notes_at_end, set_print_notes_at_end)
+
+    #################################################################
+
+    def set_print_omit_errors(self, value):
+        self.__print_omit_errors = int(value)
+
+    def get_print_omit_errors(self):
+        return bool(self.__print_omit_errors)
+
+    print_omit_errors = property(get_print_omit_errors, set_print_omit_errors)
+
+    #################################################################
+
+    def set_print_hres(self, value):
+        self.__print_hres = value
+
+    def get_print_hres(self):
+        return self.__print_hres
+
+    print_hres = property(get_print_hres, set_print_hres)
+
+    #################################################################
+
+    def set_print_vres(self, value):
+        self.__print_vres = value
+
+    def get_print_vres(self):
+        return self.__print_vres
+
+    print_vres = property(get_print_vres, set_print_vres)
+
+    #################################################################
+
+    def set_header_margin(self, value):
+        self.__header_margin = value
+
+    def get_header_margin(self):
+        return self.__header_margin
+
+    header_margin = property(get_header_margin, set_header_margin)
+
+    #################################################################
+
+    def set_footer_margin(self, value):
+        self.__footer_margin = value
+
+    def get_footer_margin(self):
+        return self.__footer_margin
+
+    footer_margin = property(get_footer_margin, set_footer_margin)
+
+    #################################################################
+
+    def set_copies_num(self, value):
+        self.__copies_num = value
+
+    def get_copies_num(self):
+        return self.__copies_num
+
+    copies_num = property(get_copies_num, set_copies_num)
+
+    ##################################################################
+
+    def set_wnd_protect(self, value):
+        self.__wnd_protect = int(value)
+
+    def get_wnd_protect(self):
+        return bool(self.__wnd_protect)
+
+    wnd_protect = property(get_wnd_protect, set_wnd_protect)
+
+    #################################################################
+
+    def set_obj_protect(self, value):
+        self.__obj_protect = int(value)
+
+    def get_obj_protect(self):
+        return bool(self.__obj_protect)
+
+    obj_protect = property(get_obj_protect, set_obj_protect)
+
+    #################################################################
+
+    def set_protect(self, value):
+        self.__protect = int(value)
+
+    def get_protect(self):
+        return bool(self.__protect)
+
+    protect = property(get_protect, set_protect)
+
+    #################################################################
+
+    def set_scen_protect(self, value):
+        self.__scen_protect = int(value)
+
+    def get_scen_protect(self):
+        return bool(self.__scen_protect)
+
+    scen_protect = property(get_scen_protect, set_scen_protect)
+
+    #################################################################
+
+    def set_password(self, value):
+        self.__password = value
+
+    def get_password(self):
+        return self.__password
+
+    password = property(get_password, set_password)
+
+    ##################################################################
+    ## Methods
+    ##################################################################
+
+    def get_parent(self):
+        return self.__parent
+
+    def write(self, r, c, label=b"", style=Style.default_style):
+        self.row(r).write(c, label, style)
+
+    def merge(self, r1, r2, c1, c2, style=Style.default_style):
+        # Stand-alone merge of previously written cells.
+        # Problems: (1) style to be used should be existing style of
+        # the top-left cell, not an arg.
+        # (2) should ensure that any previous data value in
+        # non-top-left cells is nobbled.
+        # Note: if a cell is set by a data record then later
+        # is referenced by a [MUL]BLANK record, Excel will blank
+        # out the cell on the screen, but OOo & Gnu will not
+        # blank it out. Need to do something better than writing
+        # multiple records. In the meantime, avoid this method and use
+        # write_merge() instead.
+        if c2 > c1:
+            self.row(r1).write_blanks(c1 + 1, c2,  style)
+        for r in range(r1+1, r2+1):
+            self.row(r).write_blanks(c1, c2,  style)
+        self.__merged_ranges.append((r1, r2, c1, c2))
+
+    def write_merge(self, r1, r2, c1, c2, label=b"", style=Style.default_style):
+        assert 0 <= c1 <= c2 <= 255
+        assert 0 <= r1 <= r2 <= 65535
+        self.write(r1, c1, label, style)
+        if c2 > c1:
+            self.row(r1).write_blanks(c1 + 1, c2,  style) # skip (r1, c1)
+        for r in range(r1+1, r2+1):
+            self.row(r).write_blanks(c1, c2,  style)
+        self.__merged_ranges.append((r1, r2, c1, c2))
+
+    def insert_bitmap(self, filename, row, col, x = 0, y = 0, scale_x = 1, scale_y = 1):
+        bmp = Bitmap.ImDataBmpRecord(filename)
+        obj = Bitmap.ObjBmpRecord(row, col, self, bmp, x, y, scale_x, scale_y)
+
+        self.__bmp_rec += obj.get() + bmp.get()
+
+    def col(self, indx):
+        if indx not in self.__cols:
+            self.__cols[indx] = self.Column(indx, self)
+        return self.__cols[indx]
+
+    def row(self, indx):
+        if indx not in self.__rows:
+            if indx in self.__flushed_rows:
+                raise Exception("Attempt to reuse row index %d of sheet %r after flushing" % (indx, self.__name))
+            self.__rows[indx] = self.Row(indx, self)
+            if indx > self.last_used_row:
+                self.last_used_row = indx
+            if indx < self.first_used_row:
+                self.first_used_row = indx
+        return self.__rows[indx]
+
+    def row_height(self, row): # in pixels
+        if row in self.__rows:
+            return self.__rows[row].get_height_in_pixels()
+        else:
+            return 17
+
+    def col_width(self, col): # in pixels
+        if col in self.__cols:
+            return self.__cols[col].width_in_pixels()
+        else:
+            return 64
+
+
+    ##################################################################
+    ## BIFF records generation
+    ##################################################################
+
+    def __bof_rec(self):
+        return BIFFRecords.Biff8BOFRecord(BIFFRecords.Biff8BOFRecord.WORKSHEET).get()
+
+    def __update_row_visible_levels(self):
+        if self.__rows:
+            temp = max([self.__rows[r].level for r in self.__rows]) + 1
+            self.__row_visible_levels = max(temp, self.__row_visible_levels)
+
+    def __guts_rec(self):
+        self.__update_row_visible_levels()
+        col_visible_levels = 0
+        if len(self.__cols) != 0:
+            col_visible_levels = max([self.__cols[c].level for c in self.__cols]) + 1
+        return BIFFRecords.GutsRecord(
+            self.__row_gut_width, self.__col_gut_height, self.__row_visible_levels, col_visible_levels).get()
+
+    def __defaultrowheight_rec(self):
+        options = 0x0000
+        options |= (self.row_default_height_mismatch & 1) << 0
+        options |= (self.row_default_hidden & 1) << 1
+        options |= (self.row_default_space_above & 1) << 2
+        options |= (self.row_default_space_below & 1) << 3
+        defht = self.__row_default_height
+        return BIFFRecords.DefaultRowHeightRecord(options, defht).get()
+
+    def __wsbool_rec(self):
+        options = 0x00
+        options |= (self.__show_auto_page_breaks & 0x01) << 0
+        options |= (self.__dialogue_sheet & 0x01) << 4
+        options |= (self.__auto_style_outline & 0x01) << 5
+        options |= (self.__outline_below & 0x01) << 6
+        options |= (self.__outline_right & 0x01) << 7
+        options |= (self.__fit_num_pages & 0x01) << 8
+        options |= (self.__show_row_outline & 0x01) << 10
+        options |= (self.__show_col_outline & 0x01) << 11
+        options |= (self.__alt_expr_eval & 0x01) << 14
+        options |= (self.__alt_formula_entries & 0x01) << 15
+
+        return BIFFRecords.WSBoolRecord(options).get()
+
+    def __eof_rec(self):
+        return BIFFRecords.EOFRecord().get()
+
+    def __colinfo_rec(self):
+        result = b''
+        for col in self.__cols:
+            result += self.__cols[col].get_biff_record()
+        return result
+
+    def __dimensions_rec(self):
+        return BIFFRecords.DimensionsRecord(
+            self.first_used_row, self.last_used_row,
+            self.first_used_col, self.last_used_col
+            ).get()
+
+    def __window2_rec(self):
+        # Appends SCL record.
+        options = 0
+        options |= (self.__show_formulas        & 0x01) << 0
+        options |= (self.__show_grid            & 0x01) << 1
+        options |= (self.__show_headers         & 0x01) << 2
+        options |= (self.__panes_frozen         & 0x01) << 3
+        options |= (self.show_zero_values       & 0x01) << 4
+        options |= (self.__auto_colour_grid     & 0x01) << 5
+        options |= (self.__cols_right_to_left   & 0x01) << 6
+        options |= (self.__show_outline         & 0x01) << 7
+        options |= (self.__remove_splits        & 0x01) << 8
+        options |= (self.__selected             & 0x01) << 9
+        options |= (self.__sheet_visible        & 0x01) << 10
+        options |= (self.__page_preview         & 0x01) << 11
+        if self.__page_preview:
+            scl_magn = self.__preview_magn
+        else:
+            scl_magn = self.__normal_magn
+        return BIFFRecords.Window2Record(
+            options, self.__first_visible_row, self.__first_visible_col,
+            self.__grid_colour,
+            self.__preview_magn, self.__normal_magn, scl_magn).get()
+
+    def __panes_rec(self):
+        if self.__vert_split_pos is None and self.__horz_split_pos is None:
+            return b""
+
+        if self.__vert_split_pos is None:
+            self.__vert_split_pos = 0
+        if self.__horz_split_pos is None:
+            self.__horz_split_pos = 0
+
+        if self.__panes_frozen:
+            if self.__vert_split_first_visible is None:
+                self.__vert_split_first_visible = self.__vert_split_pos
+            if self.__horz_split_first_visible is None:
+                self.__horz_split_first_visible = self.__horz_split_pos
+        else:
+            if self.__vert_split_first_visible is None:
+                self.__vert_split_first_visible = 0
+            if self.__horz_split_first_visible is None:
+                self.__horz_split_first_visible = 0
+            # inspired by pyXLWriter
+            self.__horz_split_pos = 20*self.__horz_split_pos + 255
+            self.__vert_split_pos = int(113.879*self.__vert_split_pos + 390)
+
+        if self.__vert_split_pos > 0 and self.__horz_split_pos > 0:
+            self.__split_active_pane = 0
+        elif self.__vert_split_pos > 0 and self.__horz_split_pos == 0:
+            self.__split_active_pane = 1
+        elif self.__vert_split_pos == 0 and self.__horz_split_pos > 0:
+            self.__split_active_pane = 2
+        else:
+            self.__split_active_pane = 3
+
+        result = BIFFRecords.PanesRecord(self.__vert_split_pos,
+                                         self.__horz_split_pos,
+                                         self.__horz_split_first_visible,
+                                         self.__vert_split_first_visible,
+                                         self.__split_active_pane).get()
+        return result
+
+    def __row_blocks_rec(self):
+        result = []
+        for row in self.__rows.values():
+            result.append(row.get_row_biff_data())
+            result.append(row.get_cells_biff_data())
+        return b''.join(result)
+
+    def __merged_rec(self):
+        return BIFFRecords.MergedCellsRecord(self.__merged_ranges).get()
+
+    def __bitmaps_rec(self):
+        return self.__bmp_rec
+
+    def __calc_settings_rec(self):
+        result = b''
+        result += BIFFRecords.CalcModeRecord(self.__calc_mode & 0x01).get()
+        result += BIFFRecords.CalcCountRecord(self.__calc_count & 0xFFFF).get()
+        result += BIFFRecords.RefModeRecord(self.__RC_ref_mode & 0x01).get()
+        result += BIFFRecords.IterationRecord(self.__iterations_on & 0x01).get()
+        result += BIFFRecords.DeltaRecord(self.__delta).get()
+        result += BIFFRecords.SaveRecalcRecord(self.__save_recalc & 0x01).get()
+        return result
+
+    def __print_settings_rec(self):
+        result = b''
+        result += BIFFRecords.PrintHeadersRecord(self.__print_headers).get()
+        result += BIFFRecords.PrintGridLinesRecord(self.__print_grid).get()
+        result += BIFFRecords.GridSetRecord(self.__grid_set).get()
+        result += BIFFRecords.HorizontalPageBreaksRecord(self.__horz_page_breaks).get()
+        result += BIFFRecords.VerticalPageBreaksRecord(self.__vert_page_breaks).get()
+        result += BIFFRecords.HeaderRecord(self.__header_str).get()
+        result += BIFFRecords.FooterRecord(self.__footer_str).get()
+        result += BIFFRecords.HCenterRecord(self.__print_centered_horz).get()
+        result += BIFFRecords.VCenterRecord(self.__print_centered_vert).get()
+        result += BIFFRecords.LeftMarginRecord(self.__left_margin).get()
+        result += BIFFRecords.RightMarginRecord(self.__right_margin).get()
+        result += BIFFRecords.TopMarginRecord(self.__top_margin).get()
+        result += BIFFRecords.BottomMarginRecord(self.__bottom_margin).get()
+
+        setup_page_options =  (self.__print_in_rows & 0x01) << 0
+        setup_page_options |=  (self.__portrait & 0x01) << 1
+        setup_page_options |=  (0x00 & 0x01) << 2
+        setup_page_options |=  (self.__print_not_colour & 0x01) << 3
+        setup_page_options |=  (self.__print_draft & 0x01) << 4
+        setup_page_options |=  (self.__print_notes & 0x01) << 5
+        setup_page_options |=  (0x00 & 0x01) << 6
+        setup_page_options |=  (0x01 & 0x01) << 7
+        setup_page_options |=  (self.__print_notes_at_end & 0x01) << 9
+        setup_page_options |=  (self.__print_omit_errors & 0x03) << 10
+
+        result += BIFFRecords.SetupPageRecord(self.__paper_size_code,
+                                self.__print_scaling,
+                                self.__start_page_number,
+                                self.__fit_width_to_pages,
+                                self.__fit_height_to_pages,
+                                setup_page_options,
+                                self.__print_hres,
+                                self.__print_vres,
+                                self.__header_margin,
+                                self.__footer_margin,
+                                self.__copies_num).get()
+        return result
+
+    def __protection_rec(self):
+        result = b''
+        result += BIFFRecords.ProtectRecord(self.__protect).get()
+        result += BIFFRecords.ScenProtectRecord(self.__scen_protect).get()
+        result += BIFFRecords.WindowProtectRecord(self.__wnd_protect).get()
+        result += BIFFRecords.ObjectProtectRecord(self.__obj_protect).get()
+        result += BIFFRecords.PasswordRecord(self.__password).get()
+        return result
+
+    def get_biff_data(self):
+        result = [
+            self.__bof_rec(),
+            self.__calc_settings_rec(),
+            self.__guts_rec(),
+            self.__defaultrowheight_rec(),
+            self.__wsbool_rec(),
+            self.__colinfo_rec(),
+            self.__dimensions_rec(),
+            self.__print_settings_rec(),
+            self.__protection_rec(),
+            ]
+        if self.row_tempfile:
+            self.row_tempfile.flush()
+            self.row_tempfile.seek(0)
+            result.append(self.row_tempfile.read())
+        result.extend([
+            self.__row_blocks_rec(),
+            self.__merged_rec(),
+            self.__bitmaps_rec(),
+            self.__window2_rec(),
+            self.__panes_rec(),
+            self.__eof_rec(),
+            ])
+        return b''.join(result)
+
+    def flush_row_data(self):
+        if self.row_tempfile is None:
+            self.row_tempfile = tempfile.TemporaryFile()
+        self.row_tempfile.write(self.__row_blocks_rec())
+        for rowx in self.__rows:
+            self.__flushed_rows[rowx] = 1
+        self.__update_row_visible_levels()
+        self.__rows = {}
+
+
diff --git a/tablib/packages/xlwt3/__init__.py b/tablib/packages/xlwt3/__init__.py
new file mode 100644
index 0000000..ee8373e
--- /dev/null
+++ b/tablib/packages/xlwt3/__init__.py
@@ -0,0 +1,9 @@
+import sys
+
+from .Workbook import Workbook
+from .Worksheet import Worksheet
+from .Row import Row
+from .Column import Column
+from .Formatting import Font, Alignment, Borders, Pattern, Protection
+from .Style import XFStyle, easyxf
+from .ExcelFormula import *
diff --git a/tablib/packages/xlwt3/antlr.py b/tablib/packages/xlwt3/antlr.py
new file mode 100644
index 0000000..b7b5029
--- /dev/null
+++ b/tablib/packages/xlwt3/antlr.py
@@ -0,0 +1,2868 @@
+## This file is part of PyANTLR. See LICENSE.txt for license
+## details..........Copyright (C) Wolfgang Haefelinger, 2004.
+
+## This file was copied for use with xlwt from the 2.7.7 ANTLR distribution. Yes, it
+## says 2.7.5 below. The 2.7.5 distribution version didn't have a
+## version in it.
+
+## Here is the contents of the ANTLR 2.7.7 LICENSE.txt referred to above.
+
+# SOFTWARE RIGHTS
+#
+# ANTLR 1989-2006 Developed by Terence Parr
+# Partially supported by University of San Francisco & jGuru.com
+#
+# We reserve no legal rights to the ANTLR--it is fully in the
+# public domain. An individual or company may do whatever
+# they wish with source code distributed with ANTLR or the
+# code generated by ANTLR, including the incorporation of
+# ANTLR, or its output, into commerical software.
+#
+# We encourage users to develop software with ANTLR. However,
+# we do ask that credit is given to us for developing
+# ANTLR. By "credit", we mean that if you use ANTLR or
+# incorporate any source code into one of your programs
+# (commercial product, research project, or otherwise) that
+# you acknowledge this fact somewhere in the documentation,
+# research report, etc... If you like ANTLR and have
+# developed a nice tool with the output, please mention that
+# you developed it using ANTLR. In addition, we ask that the
+# headers remain intact in our source code. As long as these
+# guidelines are kept, we expect to continue enhancing this
+# system and expect to make other tools available as they are
+# completed.
+#
+# The primary ANTLR guy:
+#
+# Terence Parr
+# parrt@cs.usfca.edu
+# parrt@antlr.org
+
+## End of contents of the ANTLR 2.7.7 LICENSE.txt ########################
+
+## get sys module
+import sys
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                     global symbols                             ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+### ANTLR Standard Tokens
+SKIP                = -1
+INVALID_TYPE        = 0
+EOF_TYPE            = 1
+EOF                 = 1
+NULL_TREE_LOOKAHEAD = 3
+MIN_USER_TYPE       = 4
+
+### ANTLR's EOF Symbol
+EOF_CHAR            = ''
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                    general functions                           ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+## Version should be automatically derived from configure.in. For now,
+## we need to bump it ourselfs. Don't remove the <version> tags.
+## <version>
+def version():
+    r = {
+        'major'  : '2',
+        'minor'  : '7',
+        'micro'  : '5',
+        'patch'  : '' ,
+        'version': '2.7.5'
+        }
+    return r
+## </version>
+
+def error(fmt,*args):
+    if fmt:
+        print("error: ", fmt % tuple(args))
+
+def ifelse(cond,_then,_else):
+    if cond :
+        r = _then
+    else:
+        r = _else
+    return r
+
+def is_string_type(x):
+    # return  (isinstance(x,str) or isinstance(x,unicode))
+    # Simplify; xlwt doesn't support Python < 2.3
+    return isinstance(str)
+
+def assert_string_type(x):
+    assert is_string_type(x)
+    pass
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                     ANTLR Exceptions                           ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class ANTLRException(Exception):
+
+    def __init__(self, *args):
+        Exception.__init__(self, *args)
+
+
+class RecognitionException(ANTLRException):
+
+    def __init__(self, *args):
+        ANTLRException.__init__(self, *args)
+        self.fileName = None
+        self.line = -1
+        self.column = -1
+        if len(args) >= 2:
+            self.fileName = args[1]
+        if len(args) >= 3:
+            self.line = args[2]
+        if len(args) >= 4:
+            self.column = args[3]
+
+    def __str__(self):
+        buf = ['']
+        if self.fileName:
+            buf.append(self.fileName + ":")
+        if self.line != -1:
+            if not self.fileName:
+                buf.append("line ")
+            buf.append(str(self.line))
+            if self.column != -1:
+                buf.append(":" + str(self.column))
+            buf.append(":")
+        buf.append(" ")
+        return str('').join(buf)
+
+    __repr__ = __str__
+
+
+class NoViableAltException(RecognitionException):
+
+    def __init__(self, *args):
+        RecognitionException.__init__(self, *args)
+        self.token = None
+        self.node  = None
+        if isinstance(args[0],AST):
+            self.node = args[0]
+        elif isinstance(args[0],Token):
+            self.token = args[0]
+        else:
+            raise TypeError("NoViableAltException requires Token or AST argument")
+
+    def __str__(self):
+        if self.token:
+            line = self.token.getLine()
+            col  = self.token.getColumn()
+            text = self.token.getText()
+            return "unexpected symbol at line %s (column %s): \"%s\"" % (line,col,text)
+        if self.node == ASTNULL:
+            return "unexpected end of subtree"
+        assert self.node
+        ### hackish, we assume that an AST contains method getText
+        return "unexpected node: %s" % (self.node.getText())
+
+    __repr__ = __str__
+
+
+class NoViableAltForCharException(RecognitionException):
+
+    def __init__(self, *args):
+        self.foundChar = None
+        if len(args) == 2:
+            self.foundChar = args[0]
+            scanner = args[1]
+            RecognitionException.__init__(self, "NoViableAlt",
+                                          scanner.getFilename(),
+                                          scanner.getLine(),
+                                          scanner.getColumn())
+        elif len(args) == 4:
+            self.foundChar = args[0]
+            fileName = args[1]
+            line = args[2]
+            column = args[3]
+            RecognitionException.__init__(self, "NoViableAlt",
+                                          fileName, line, column)
+        else:
+            RecognitionException.__init__(self, "NoViableAlt",
+                                          '', -1, -1)
+
+    def __str__(self):
+        mesg = "unexpected char: "
+        if self.foundChar >= ' ' and self.foundChar <= '~':
+            mesg += "'" + self.foundChar + "'"
+        elif self.foundChar:
+            mesg += "0x" + hex(ord(self.foundChar)).upper()[2:]
+        else:
+            mesg += "<None>"
+        return mesg
+
+    __repr__ = __str__
+
+
+class SemanticException(RecognitionException):
+
+    def __init__(self, *args):
+        RecognitionException.__init__(self, *args)
+
+
+class MismatchedCharException(RecognitionException):
+
+    NONE = 0
+    CHAR = 1
+    NOT_CHAR = 2
+    RANGE = 3
+    NOT_RANGE = 4
+    SET = 5
+    NOT_SET = 6
+
+    def __init__(self, *args):
+        self.args = args
+        if len(args) == 5:
+            # Expected range / not range
+            if args[3]:
+                self.mismatchType = MismatchedCharException.NOT_RANGE
+            else:
+                self.mismatchType = MismatchedCharException.RANGE
+            self.foundChar = args[0]
+            self.expecting = args[1]
+            self.upper = args[2]
+            self.scanner = args[4]
+            RecognitionException.__init__(self, "Mismatched char range",
+                                          self.scanner.getFilename(),
+                                          self.scanner.getLine(),
+                                          self.scanner.getColumn())
+        elif len(args) == 4 and is_string_type(args[1]):
+            # Expected char / not char
+            if args[2]:
+                self.mismatchType = MismatchedCharException.NOT_CHAR
+            else:
+                self.mismatchType = MismatchedCharException.CHAR
+            self.foundChar = args[0]
+            self.expecting = args[1]
+            self.scanner = args[3]
+            RecognitionException.__init__(self, "Mismatched char",
+                                          self.scanner.getFilename(),
+                                          self.scanner.getLine(),
+                                          self.scanner.getColumn())
+        elif len(args) == 4 and isinstance(args[1], BitSet):
+            # Expected BitSet / not BitSet
+            if args[2]:
+                self.mismatchType = MismatchedCharException.NOT_SET
+            else:
+                self.mismatchType = MismatchedCharException.SET
+            self.foundChar = args[0]
+            self.set = args[1]
+            self.scanner = args[3]
+            RecognitionException.__init__(self, "Mismatched char set",
+                                          self.scanner.getFilename(),
+                                          self.scanner.getLine(),
+                                          self.scanner.getColumn())
+        else:
+            self.mismatchType = MismatchedCharException.NONE
+            RecognitionException.__init__(self, "Mismatched char")
+
+    ## Append a char to the msg buffer.  If special,
+    #  then show escaped version
+    #
+    def appendCharName(self, sb, c):
+        if not c or c == 65535:
+            # 65535 = (char) -1 = EOF
+            sb.append("'<EOF>'")
+        elif c == '\n':
+            sb.append("'\\n'")
+        elif c == '\r':
+            sb.append("'\\r'");
+        elif c == '\t':
+            sb.append("'\\t'")
+        else:
+            sb.append('\'' + c + '\'')
+
+    ##
+    # Returns an error message with line number/column information
+    #
+    def __str__(self):
+        sb = ['']
+        sb.append(RecognitionException.__str__(self))
+
+        if self.mismatchType == MismatchedCharException.CHAR:
+            sb.append("expecting ")
+            self.appendCharName(sb, self.expecting)
+            sb.append(", found ")
+            self.appendCharName(sb, self.foundChar)
+        elif self.mismatchType == MismatchedCharException.NOT_CHAR:
+            sb.append("expecting anything but '")
+            self.appendCharName(sb, self.expecting)
+            sb.append("'; got it anyway")
+        elif self.mismatchType in [MismatchedCharException.RANGE, MismatchedCharException.NOT_RANGE]:
+            sb.append("expecting char ")
+            if self.mismatchType == MismatchedCharException.NOT_RANGE:
+                sb.append("NOT ")
+            sb.append("in range: ")
+            appendCharName(sb, self.expecting)
+            sb.append("..")
+            appendCharName(sb, self.upper)
+            sb.append(", found ")
+            appendCharName(sb, self.foundChar)
+        elif self.mismatchType in [MismatchedCharException.SET, MismatchedCharException.NOT_SET]:
+            sb.append("expecting ")
+            if self.mismatchType == MismatchedCharException.NOT_SET:
+                sb.append("NOT ")
+            sb.append("one of (")
+            for i in range(len(self.set)):
+                self.appendCharName(sb, self.set[i])
+            sb.append("), found ")
+            self.appendCharName(sb, self.foundChar)
+
+        return str().join(sb).strip()
+
+    __repr__ = __str__
+
+
+class MismatchedTokenException(RecognitionException):
+
+    NONE = 0
+    TOKEN = 1
+    NOT_TOKEN = 2
+    RANGE = 3
+    NOT_RANGE = 4
+    SET = 5
+    NOT_SET = 6
+
+    def __init__(self, *args):
+        self.args =  args
+        self.tokenNames = []
+        self.token = None
+        self.tokenText = ''
+        self.node =  None
+        if len(args) == 6:
+            # Expected range / not range
+            if args[3]:
+                self.mismatchType = MismatchedTokenException.NOT_RANGE
+            else:
+                self.mismatchType = MismatchedTokenException.RANGE
+            self.tokenNames = args[0]
+            self.expecting = args[2]
+            self.upper = args[3]
+            self.fileName = args[5]
+
+        elif len(args) == 4 and isinstance(args[2], int):
+            # Expected token / not token
+            if args[3]:
+                self.mismatchType = MismatchedTokenException.NOT_TOKEN
+            else:
+                self.mismatchType = MismatchedTokenException.TOKEN
+            self.tokenNames = args[0]
+            self.expecting = args[2]
+
+        elif len(args) == 4 and isinstance(args[2], BitSet):
+            # Expected BitSet / not BitSet
+            if args[3]:
+                self.mismatchType = MismatchedTokenException.NOT_SET
+            else:
+                self.mismatchType = MismatchedTokenException.SET
+            self.tokenNames = args[0]
+            self.set = args[2]
+
+        else:
+            self.mismatchType = MismatchedTokenException.NONE
+            RecognitionException.__init__(self, "Mismatched Token: expecting any AST node", "<AST>", -1, -1)
+
+        if len(args) >= 2:
+            if isinstance(args[1],Token):
+                self.token = args[1]
+                self.tokenText = self.token.getText()
+                RecognitionException.__init__(self, "Mismatched Token",
+                                              self.fileName,
+                                              self.token.getLine(),
+                                              self.token.getColumn())
+            elif isinstance(args[1],AST):
+                self.node = args[1]
+                self.tokenText = str(self.node)
+                RecognitionException.__init__(self, "Mismatched Token",
+                                              "<AST>",
+                                              self.node.getLine(),
+                                              self.node.getColumn())
+            else:
+                self.tokenText = "<empty tree>"
+                RecognitionException.__init__(self, "Mismatched Token",
+                                              "<AST>", -1, -1)
+
+    def appendTokenName(self, sb, tokenType):
+        if tokenType == INVALID_TYPE:
+            sb.append("<Set of tokens>")
+        elif tokenType < 0 or tokenType >= len(self.tokenNames):
+            sb.append("<" + str(tokenType) + ">")
+        else:
+            sb.append(self.tokenNames[tokenType])
+
+    ##
+    # Returns an error message with line number/column information
+    #
+    def __str__(self):
+        sb = ['']
+        sb.append(RecognitionException.__str__(self))
+
+        if self.mismatchType == MismatchedTokenException.TOKEN:
+            sb.append("expecting ")
+            self.appendTokenName(sb, self.expecting)
+            sb.append(", found " + self.tokenText)
+        elif self.mismatchType == MismatchedTokenException.NOT_TOKEN:
+            sb.append("expecting anything but '")
+            self.appendTokenName(sb, self.expecting)
+            sb.append("'; got it anyway")
+        elif self.mismatchType in [MismatchedTokenException.RANGE, MismatchedTokenException.NOT_RANGE]:
+            sb.append("expecting token ")
+            if self.mismatchType == MismatchedTokenException.NOT_RANGE:
+                sb.append("NOT ")
+            sb.append("in range: ")
+            appendTokenName(sb, self.expecting)
+            sb.append("..")
+            appendTokenName(sb, self.upper)
+            sb.append(", found " + self.tokenText)
+        elif self.mismatchType in [MismatchedTokenException.SET, MismatchedTokenException.NOT_SET]:
+            sb.append("expecting ")
+            if self.mismatchType == MismatchedTokenException.NOT_SET:
+                sb.append("NOT ")
+            sb.append("one of (")
+            for i in range(len(self.set)):
+                self.appendTokenName(sb, self.set[i])
+            sb.append("), found " + self.tokenText)
+
+        return str().join(sb).strip()
+
+    __repr__ = __str__
+
+
+class TokenStreamException(ANTLRException):
+
+    def __init__(self, *args):
+        ANTLRException.__init__(self, *args)
+
+
+# Wraps an Exception in a TokenStreamException
+class TokenStreamIOException(TokenStreamException):
+
+    def __init__(self, *args):
+        if args and isinstance(args[0], Exception):
+            io = args[0]
+            TokenStreamException.__init__(self, str(io))
+            self.io = io
+        else:
+            TokenStreamException.__init__(self, *args)
+            self.io = self
+
+
+# Wraps a RecognitionException in a TokenStreamException
+class TokenStreamRecognitionException(TokenStreamException):
+
+    def __init__(self, *args):
+        if args and isinstance(args[0], RecognitionException):
+            recog = args[0]
+            TokenStreamException.__init__(self, str(recog))
+            self.recog = recog
+        else:
+            raise TypeError("TokenStreamRecognitionException requires RecognitionException argument")
+
+    def __str__(self):
+        return str(self.recog)
+
+    __repr__ = __str__
+
+
+class TokenStreamRetryException(TokenStreamException):
+
+    def __init__(self, *args):
+        TokenStreamException.__init__(self, *args)
+
+
+class CharStreamException(ANTLRException):
+
+    def __init__(self, *args):
+        ANTLRException.__init__(self, *args)
+
+
+# Wraps an Exception in a CharStreamException
+class CharStreamIOException(CharStreamException):
+
+    def __init__(self, *args):
+        if args and isinstance(args[0], Exception):
+            io = args[0]
+            CharStreamException.__init__(self, str(io))
+            self.io = io
+        else:
+            CharStreamException.__init__(self, *args)
+            self.io = self
+
+
+class TryAgain(Exception):
+    pass
+
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       Token                                    ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class Token(object):
+    SKIP                = -1
+    INVALID_TYPE        = 0
+    EOF_TYPE            = 1
+    EOF                 = 1
+    NULL_TREE_LOOKAHEAD = 3
+    MIN_USER_TYPE       = 4
+
+    def __init__(self,**argv):
+        try:
+            self.type = argv['type']
+        except:
+            self.type = INVALID_TYPE
+        try:
+            self.text = argv['text']
+        except:
+            self.text = "<no text>"
+
+    def isEOF(self):
+        return (self.type == EOF_TYPE)
+
+    def getColumn(self):
+        return 0
+
+    def getLine(self):
+        return 0
+
+    def getFilename(self):
+        return None
+
+    def setFilename(self,name):
+        return self
+
+    def getText(self):
+        return "<no text>"
+
+    def setText(self,text):
+        if is_string_type(text):
+            pass
+        else:
+            raise TypeError("Token.setText requires string argument")
+        return self
+
+    def setColumn(self,column):
+        return self
+
+    def setLine(self,line):
+        return self
+
+    def getType(self):
+        return self.type
+
+    def setType(self,type):
+        if isinstance(type,int):
+            self.type = type
+        else:
+            raise TypeError("Token.setType requires integer argument")
+        return self
+
+    def toString(self):
+        ## not optimal
+        type_ = self.type
+        if type_ == 3:
+            tval = 'NULL_TREE_LOOKAHEAD'
+        elif type_ == 1:
+            tval = 'EOF_TYPE'
+        elif type_ == 0:
+            tval = 'INVALID_TYPE'
+        elif type_ == -1:
+            tval = 'SKIP'
+        else:
+            tval = type_
+        return '["%s",<%s>]' % (self.getText(),tval)
+
+    __str__ = toString
+    __repr__ = toString
+
+### static attribute ..
+Token.badToken = Token( type=INVALID_TYPE, text="<no text>")
+
+if __name__ == "__main__":
+    print("testing ..")
+    T = Token.badToken
+    print(T)
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       CommonToken                              ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class CommonToken(Token):
+
+    def __init__(self,**argv):
+        Token.__init__(self,**argv)
+        self.line = 0
+        self.col  = 0
+        try:
+            self.line = argv['line']
+        except:
+            pass
+        try:
+            self.col = argv['col']
+        except:
+            pass
+
+    def getLine(self):
+        return self.line
+
+    def getText(self):
+        return self.text
+
+    def getColumn(self):
+        return self.col
+
+    def setLine(self,line):
+        self.line = line
+        return self
+
+    def setText(self,text):
+        self.text = text
+        return self
+
+    def setColumn(self,col):
+        self.col = col
+        return self
+
+    def toString(self):
+        ## not optimal
+        type_ = self.type
+        if type_ == 3:
+            tval = 'NULL_TREE_LOOKAHEAD'
+        elif type_ == 1:
+            tval = 'EOF_TYPE'
+        elif type_ == 0:
+            tval = 'INVALID_TYPE'
+        elif type_ == -1:
+            tval = 'SKIP'
+        else:
+            tval = type_
+        d = {
+           'text' : self.text,
+           'type' : tval,
+           'line' : self.line,
+           'colm' : self.col
+           }
+
+        fmt = '["%(text)s",<%(type)s>,line=%(line)s,col=%(colm)s]'
+        return fmt % d
+
+    __str__ = toString
+    __repr__ = toString
+
+
+if __name__ == '__main__' :
+    T = CommonToken()
+    print(T)
+    T = CommonToken(col=15,line=1,text="some text", type=5)
+    print(T)
+    T = CommonToken()
+    T.setLine(1).setColumn(15).setText("some text").setType(5)
+    print(T)
+    print(T.getLine())
+    print(T.getColumn())
+    print(T.getText())
+    print(T.getType())
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                    CommonHiddenStreamToken                     ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class CommonHiddenStreamToken(CommonToken):
+    def __init__(self,*args):
+        CommonToken.__init__(self,*args)
+        self.hiddenBefore = None
+        self.hiddenAfter  = None
+
+    def getHiddenAfter(self):
+        return self.hiddenAfter
+
+    def getHiddenBefore(self):
+        return self.hiddenBefore
+
+    def setHiddenAfter(self,t):
+        self.hiddenAfter = t
+
+    def setHiddenBefore(self, t):
+        self.hiddenBefore = t
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       Queue                                    ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+## Shall be a circular buffer on tokens ..
+class Queue(object):
+
+    def __init__(self):
+        self.buffer = [] # empty list
+
+    def append(self,item):
+        self.buffer.append(item)
+
+    def elementAt(self,index):
+        return self.buffer[index]
+
+    def reset(self):
+        self.buffer = []
+
+    def removeFirst(self):
+        self.buffer.pop(0)
+
+    def length(self):
+        return len(self.buffer)
+
+    def __str__(self):
+        return str(self.buffer)
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       InputBuffer                              ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class InputBuffer(object):
+    def __init__(self):
+        self.nMarkers = 0
+        self.markerOffset = 0
+        self.numToConsume = 0
+        self.queue = Queue()
+
+    def __str__(self):
+        return "(%s,%s,%s,%s)" % (
+           self.nMarkers,
+           self.markerOffset,
+           self.numToConsume,
+           self.queue)
+
+    def __repr__(self):
+        return str(self)
+
+    def commit(self):
+        self.nMarkers -= 1
+
+    def consume(self) :
+        self.numToConsume += 1
+
+    ## probably better to return a list of items
+    ## because of unicode. Or return a unicode
+    ## string ..
+    def getLAChars(self) :
+        i = self.markerOffset
+        n = self.queue.length()
+        s = ''
+        while i<n:
+            s += self.queue.elementAt(i)
+        return s
+
+    ## probably better to return a list of items
+    ## because of unicode chars
+    def getMarkedChars(self) :
+        s = ''
+        i = 0
+        n = self.markerOffset
+        while i<n:
+            s += self.queue.elementAt(i)
+        return s
+
+    def isMarked(self) :
+        return self.nMarkers != 0
+
+    def fill(self,k):
+        ### abstract method
+        raise NotImplementedError()
+
+    def LA(self,k) :
+        self.fill(k)
+        return self.queue.elementAt(self.markerOffset + k - 1)
+
+    def mark(self) :
+        self.syncConsume()
+        self.nMarkers += 1
+        return self.markerOffset
+
+    def rewind(self,mark) :
+        self.syncConsume()
+        self.markerOffset = mark
+        self.nMarkers -= 1
+
+    def reset(self) :
+        self.nMarkers = 0
+        self.markerOffset = 0
+        self.numToConsume = 0
+        self.queue.reset()
+
+    def syncConsume(self) :
+        while self.numToConsume > 0:
+            if self.nMarkers > 0:
+                # guess mode -- leave leading characters and bump offset.
+                self.markerOffset += 1
+            else:
+                # normal mode -- remove first character
+                self.queue.removeFirst()
+            self.numToConsume -= 1
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       CharBuffer                               ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class CharBuffer(InputBuffer):
+    def __init__(self,reader):
+        ##assert isinstance(reader,file)
+        super(CharBuffer,self).__init__()
+        ## a reader is supposed to be anything that has
+        ## a method 'read(int)'.
+        self.input = reader
+
+    def __str__(self):
+        base = super(CharBuffer,self).__str__()
+        return "CharBuffer{%s,%s" % (base,str(input))
+
+    def fill(self,amount):
+        try:
+            self.syncConsume()
+            while self.queue.length() < (amount + self.markerOffset) :
+                ## retrieve just one char - what happend at end
+                ## of input?
+                c = self.input.read(1)
+                ### python's behaviour is to return the empty string  on
+                ### EOF, ie. no exception whatsoever is thrown. An empty
+                ### python  string  has  the  nice feature that it is of
+                ### type 'str' and  "not ''" would return true. Contrary,
+                ### one can't  do  this: '' in 'abc'. This should return
+                ### false,  but all we  get  is  then  a TypeError as an
+                ### empty string is not a character.
+
+                ### Let's assure then that we have either seen a
+                ### character or an empty string (EOF).
+                assert len(c) == 0 or len(c) == 1
+
+                ### And it shall be of type string (ASCII or UNICODE).
+                assert is_string_type(c)
+
+                ### Just append EOF char to buffer. Note that buffer may
+                ### contain then just more than one EOF char ..
+
+                ### use unicode chars instead of ASCII ..
+                self.queue.append(c)
+        except Exception as e:
+            raise CharStreamIOException(e)
+        ##except: # (mk) Cannot happen ...
+            ##error ("unexpected exception caught ..")
+            ##assert 0
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       LexerSharedInputState                    ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class LexerSharedInputState(object):
+    def __init__(self,ibuf):
+        assert isinstance(ibuf,InputBuffer)
+        self.input = ibuf
+        self.column = 1
+        self.line = 1
+        self.tokenStartColumn = 1
+        self.tokenStartLine = 1
+        self.guessing = 0
+        self.filename = None
+
+    def reset(self):
+        self.column = 1
+        self.line = 1
+        self.tokenStartColumn = 1
+        self.tokenStartLine = 1
+        self.guessing = 0
+        self.filename = None
+        self.input.reset()
+
+    def LA(self,k):
+        return self.input.LA(k)
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                    TokenStream                                 ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class TokenStream(object):
+    def nextToken(self):
+        pass
+
+    def __iter__(self):
+        return TokenStreamIterator(self)
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                    TokenStreamIterator                                 ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class TokenStreamIterator(object):
+    def __init__(self,inst):
+        if isinstance(inst,TokenStream):
+            self.inst = inst
+            return
+        raise TypeError("TokenStreamIterator requires TokenStream object")
+
+    def __next__(self):
+        assert self.inst
+        item = self.inst.nextToken()
+        if not item or item.isEOF():
+            raise StopIteration()
+        return item
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                    TokenStreamSelector                        ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class TokenStreamSelector(TokenStream):
+
+    def __init__(self):
+        self._input = None
+        self._stmap = {}
+        self._stack = []
+
+    def addInputStream(self,stream,key):
+        self._stmap[key] = stream
+
+    def getCurrentStream(self):
+        return self._input
+
+    def getStream(self,sname):
+        try:
+            stream = self._stmap[sname]
+        except:
+            raise ValueError("TokenStream " + sname + " not found");
+        return stream;
+
+    def nextToken(self):
+        while 1:
+            try:
+                return self._input.nextToken()
+            except TokenStreamRetryException as r:
+                ### just retry "forever"
+                pass
+
+    def pop(self):
+        stream = self._stack.pop();
+        self.select(stream);
+        return stream;
+
+    def push(self,arg):
+        self._stack.append(self._input);
+        self.select(arg)
+
+    def retry(self):
+        raise TokenStreamRetryException()
+
+    def select(self,arg):
+        if isinstance(arg,TokenStream):
+            self._input = arg
+            return
+        if is_string_type(arg):
+            self._input = self.getStream(arg)
+            return
+        raise TypeError("TokenStreamSelector.select requires " +
+                        "TokenStream or string argument")
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                      TokenStreamBasicFilter                    ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class TokenStreamBasicFilter(TokenStream):
+
+    def __init__(self,input):
+
+        self.input = input;
+        self.discardMask = BitSet()
+
+    def discard(self,arg):
+        if isinstance(arg,int):
+            self.discardMask.add(arg)
+            return
+        if isinstance(arg,BitSet):
+            self.discardMark = arg
+            return
+        raise TypeError("TokenStreamBasicFilter.discard requires" +
+                        "integer or BitSet argument")
+
+    def nextToken(self):
+        tok = self.input.nextToken()
+        while tok and self.discardMask.member(tok.getType()):
+            tok = self.input.nextToken()
+        return tok
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                      TokenStreamHiddenTokenFilter              ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class TokenStreamHiddenTokenFilter(TokenStreamBasicFilter):
+
+    def __init__(self,input):
+        TokenStreamBasicFilter.__init__(self,input)
+        self.hideMask = BitSet()
+        self.nextMonitoredToken = None
+        self.lastHiddenToken = None
+        self.firstHidden = None
+
+    def consume(self):
+        self.nextMonitoredToken = self.input.nextToken()
+
+    def consumeFirst(self):
+        self.consume()
+
+        p = None;
+        while self.hideMask.member(self.LA(1).getType()) or \
+              self.discardMask.member(self.LA(1).getType()):
+            if self.hideMask.member(self.LA(1).getType()):
+                if not p:
+                    p = self.LA(1)
+                else:
+                    p.setHiddenAfter(self.LA(1))
+                    self.LA(1).setHiddenBefore(p)
+                    p = self.LA(1)
+                self.lastHiddenToken = p
+                if not self.firstHidden:
+                    self.firstHidden = p
+            self.consume()
+
+    def getDiscardMask(self):
+        return self.discardMask
+
+    def getHiddenAfter(self,t):
+        return t.getHiddenAfter()
+
+    def getHiddenBefore(self,t):
+        return t.getHiddenBefore()
+
+    def getHideMask(self):
+        return self.hideMask
+
+    def getInitialHiddenToken(self):
+        return self.firstHidden
+
+    def hide(self,m):
+        if isinstance(m,int):
+            self.hideMask.add(m)
+            return
+        if isinstance(m.BitMask):
+            self.hideMask = m
+            return
+
+    def LA(self,i):
+        return self.nextMonitoredToken
+
+    def nextToken(self):
+        if not self.LA(1):
+            self.consumeFirst()
+
+        monitored = self.LA(1)
+
+        monitored.setHiddenBefore(self.lastHiddenToken)
+        self.lastHiddenToken = None
+
+        self.consume()
+        p = monitored
+
+        while self.hideMask.member(self.LA(1).getType()) or \
+              self.discardMask.member(self.LA(1).getType()):
+            if self.hideMask.member(self.LA(1).getType()):
+                p.setHiddenAfter(self.LA(1))
+                if p != monitored:
+                    self.LA(1).setHiddenBefore(p)
+                p = self.lastHiddenToken = self.LA(1)
+            self.consume()
+        return monitored
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       StringBuffer                             ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class StringBuffer:
+    def __init__(self,string=None):
+        if string:
+            self.text = list(string)
+        else:
+            self.text = []
+
+    def setLength(self,sz):
+        if not sz :
+            self.text = []
+            return
+        assert sz>0
+        if sz >= self.length():
+            return
+        ### just reset to empty buffer
+        self.text = self.text[0:sz]
+
+    def length(self):
+        return len(self.text)
+
+    def append(self,c):
+        self.text.append(c)
+
+    ### return buffer as string. Arg 'a' is  used  as index
+    ## into the buffer and 2nd argument shall be the length.
+    ## If 2nd args is absent, we return chars till end of
+    ## buffer starting with 'a'.
+    def getString(self,a=None,length=None):
+        if not a :
+            a = 0
+        assert a>=0
+        if a>= len(self.text) :
+            return ""
+
+        if not length:
+            ## no second argument
+            L = self.text[a:]
+        else:
+            assert (a+length) <= len(self.text)
+            b = a + length
+            L = self.text[a:b]
+        s = ""
+        for x in L : s += x
+        return s
+
+    toString = getString ## alias
+
+    def __str__(self):
+        return str(self.text)
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       Reader                                   ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+## When reading Japanese chars, it happens that a stream returns a
+## 'char' of length 2. This looks like  a  bug  in the appropriate
+## codecs - but I'm  rather  unsure about this. Anyway, if this is
+## the case, I'm going to  split  this string into a list of chars
+## and put them  on  hold, ie. on a  buffer. Next time when called
+## we read from buffer until buffer is empty.
+## wh: nov, 25th -> problem does not appear in Python 2.4.0.c1.
+
+class Reader(object):
+    def __init__(self,stream):
+        self.cin = stream
+        self.buf = []
+
+    def read(self,num):
+        assert num==1
+
+        if len(self.buf):
+            return self.buf.pop()
+
+        ## Read a char - this may return a string.
+        ## Is this a bug in codecs/Python?
+        c = self.cin.read(1)
+
+        if not c or len(c)==1:
+            return c
+
+        L = list(c)
+        L.reverse()
+        for x in L:
+            self.buf.append(x)
+
+        ## read one char ..
+        return self.read(1)
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       CharScanner                              ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class CharScanner(TokenStream):
+    ## class members
+    NO_CHAR = 0
+    EOF_CHAR = ''  ### EOF shall be the empty string.
+
+    def __init__(self, *argv, **kwargs):
+        super(CharScanner, self).__init__()
+        self.saveConsumedInput = True
+        self.tokenClass = None
+        self.caseSensitive = True
+        self.caseSensitiveLiterals = True
+        self.literals = None
+        self.tabsize = 8
+        self._returnToken = None
+        self.commitToPath = False
+        self.traceDepth = 0
+        self.text = StringBuffer()
+        self.hashString = hash(self)
+        self.setTokenObjectClass(CommonToken)
+        self.setInput(*argv)
+
+    def __iter__(self):
+        return CharScannerIterator(self)
+
+    def setInput(self,*argv):
+        ## case 1:
+        ## if there's no arg we default to read from
+        ## standard input
+        if not argv:
+            import sys
+            self.setInput(sys.stdin)
+            return
+
+        ## get 1st argument
+        arg1 = argv[0]
+
+        ## case 2:
+        ## if arg1 is a string,  we assume it's a file name
+        ## and  open  a  stream  using 2nd argument as open
+        ## mode. If there's no 2nd argument we fall back to
+        ## mode '+rb'.
+        if is_string_type(arg1):
+            f = open(arg1,"rb")
+            self.setInput(f)
+            self.setFilename(arg1)
+            return
+
+        ## case 3:
+        ## if arg1 is a file we wrap it by a char buffer (
+        ## some additional checks?? No, can't do this in
+        ## general).
+        if isinstance(arg1,file):
+            self.setInput(CharBuffer(arg1))
+            return
+
+        ## case 4:
+        ## if arg1 is of type SharedLexerInputState we use
+        ## argument as is.
+        if isinstance(arg1,LexerSharedInputState):
+            self.inputState = arg1
+            return
+
+        ## case 5:
+        ## check whether argument type is of type input
+        ## buffer. If so create a SharedLexerInputState and
+        ## go ahead.
+        if isinstance(arg1,InputBuffer):
+            self.setInput(LexerSharedInputState(arg1))
+            return
+
+        ## case 6:
+        ## check whether argument type has a method read(int)
+        ## If so create CharBuffer ...
+        try:
+            if arg1.read:
+                rd = Reader(arg1)
+                cb = CharBuffer(rd)
+                ss = LexerSharedInputState(cb)
+                self.inputState = ss
+            return
+        except:
+            pass
+
+        ## case 7:
+        ## raise wrong argument exception
+        raise TypeError(argv)
+
+    def setTabSize(self,size) :
+        self.tabsize = size
+
+    def getTabSize(self) :
+        return self.tabsize
+
+    def setCaseSensitive(self,t) :
+        self.caseSensitive = t
+
+    def setCommitToPath(self,commit) :
+        self.commitToPath = commit
+
+    def setFilename(self,f) :
+        self.inputState.filename = f
+
+    def setLine(self,line) :
+        self.inputState.line = line
+
+    def setText(self,s) :
+        self.resetText()
+        self.text.append(s)
+
+    def getCaseSensitive(self) :
+        return self.caseSensitive
+
+    def getCaseSensitiveLiterals(self) :
+        return self.caseSensitiveLiterals
+
+    def getColumn(self) :
+        return self.inputState.column
+
+    def setColumn(self,c) :
+        self.inputState.column = c
+
+    def getCommitToPath(self) :
+        return self.commitToPath
+
+    def getFilename(self) :
+        return self.inputState.filename
+
+    def getInputBuffer(self) :
+        return self.inputState.input
+
+    def getInputState(self) :
+        return self.inputState
+
+    def setInputState(self,state) :
+        assert isinstance(state,LexerSharedInputState)
+        self.inputState = state
+
+    def getLine(self) :
+        return self.inputState.line
+
+    def getText(self) :
+        return str(self.text)
+
+    def getTokenObject(self) :
+        return self._returnToken
+
+    def LA(self,i) :
+        c = self.inputState.input.LA(i)
+        if not self.caseSensitive:
+            ### E0006
+            c = c.__class__.lower(c)
+        return c
+
+    def makeToken(self,type) :
+        try:
+            ## dynamically load a class
+            assert self.tokenClass
+            tok = self.tokenClass()
+            tok.setType(type)
+            tok.setColumn(self.inputState.tokenStartColumn)
+            tok.setLine(self.inputState.tokenStartLine)
+            return tok
+        except:
+            self.panic("unable to create new token")
+        return Token.badToken
+
+    def mark(self) :
+        return self.inputState.input.mark()
+
+    def _match_bitset(self,b) :
+        if b.member(self.LA(1)):
+            self.consume()
+        else:
+            raise MismatchedCharException(self.LA(1), b, False, self)
+
+    def _match_string(self,s) :
+        for c in s:
+            if self.LA(1) == c:
+                self.consume()
+            else:
+                raise MismatchedCharException(self.LA(1), c, False, self)
+
+    def match(self,item):
+        if is_string_type(item):
+            return self._match_string(item)
+        else:
+            return self._match_bitset(item)
+
+    def matchNot(self,c) :
+        if self.LA(1) != c:
+            self.consume()
+        else:
+            raise MismatchedCharException(self.LA(1), c, True, self)
+
+    def matchRange(self,c1,c2) :
+        if self.LA(1) < c1 or self.LA(1) > c2 :
+            raise MismatchedCharException(self.LA(1), c1, c2, False, self)
+        else:
+            self.consume()
+
+    def newline(self) :
+        self.inputState.line += 1
+        self.inputState.column = 1
+
+    def tab(self) :
+        c = self.getColumn()
+        nc = ( ((c-1)/self.tabsize) + 1) * self.tabsize + 1
+        self.setColumn(nc)
+
+    def panic(self,s='') :
+        print("CharScanner: panic: " + s)
+        sys.exit(1)
+
+    def reportError(self,ex) :
+        print(ex)
+
+    def reportError(self,s) :
+        if not self.getFilename():
+            print("error: " + str(s))
+        else:
+            print(self.getFilename() + ": error: " + str(s))
+
+    def reportWarning(self,s) :
+        if not self.getFilename():
+            print("warning: " + str(s))
+        else:
+            print(self.getFilename() + ": warning: " + str(s))
+
+    def resetText(self) :
+        self.text.setLength(0)
+        self.inputState.tokenStartColumn = self.inputState.column
+        self.inputState.tokenStartLine = self.inputState.line
+
+    def rewind(self,pos) :
+        self.inputState.input.rewind(pos)
+
+    def setTokenObjectClass(self,cl):
+        self.tokenClass = cl
+
+    def testForLiteral(self,token):
+        if not token:
+            return
+        assert isinstance(token,Token)
+
+        _type = token.getType()
+
+        ## special tokens can't be literals
+        if _type in [SKIP,INVALID_TYPE,EOF_TYPE,NULL_TREE_LOOKAHEAD] :
+            return
+
+        _text = token.getText()
+        if not _text:
+            return
+
+        assert is_string_type(_text)
+        _type = self.testLiteralsTable(_text,_type)
+        token.setType(_type)
+        return _type
+
+    def testLiteralsTable(self,*args):
+        if is_string_type(args[0]):
+            s = args[0]
+            i = args[1]
+        else:
+            s = self.text.getString()
+            i = args[0]
+
+        ## check whether integer has been given
+        if not isinstance(i,int):
+            assert isinstance(i,int)
+
+        ## check whether we have a dict
+        assert isinstance(self.literals,dict)
+        try:
+            ## E0010
+            if not self.caseSensitiveLiterals:
+                s = s.__class__.lower(s)
+            i = self.literals[s]
+        except:
+            pass
+        return i
+
+    def toLower(self,c):
+        return c.__class__.lower()
+
+    def traceIndent(self):
+        print(' ' * self.traceDepth)
+
+    def traceIn(self,rname):
+        self.traceDepth += 1
+        self.traceIndent()
+        print("> lexer %s c== %s" % (rname,self.LA(1)))
+
+    def traceOut(self,rname):
+        self.traceIndent()
+        print("< lexer %s c== %s" % (rname,self.LA(1)))
+        self.traceDepth -= 1
+
+    def uponEOF(self):
+        pass
+
+    def append(self,c):
+        if self.saveConsumedInput :
+            self.text.append(c)
+
+    def commit(self):
+        self.inputState.input.commit()
+
+    def consume(self):
+        if not self.inputState.guessing:
+            c = self.LA(1)
+            if self.caseSensitive:
+                self.append(c)
+            else:
+                # use input.LA(), not LA(), to get original case
+                # CharScanner.LA() would toLower it.
+                c =  self.inputState.input.LA(1)
+                self.append(c)
+
+            if c and c in "\t":
+                self.tab()
+            else:
+                self.inputState.column += 1
+        self.inputState.input.consume()
+
+    ## Consume chars until one matches the given char
+    def consumeUntil_char(self,c):
+        while self.LA(1) != EOF_CHAR and self.LA(1) != c:
+            self.consume()
+
+    ## Consume chars until one matches the given set
+    def consumeUntil_bitset(self,bitset):
+        while self.LA(1) != EOF_CHAR and not self.set.member(self.LA(1)):
+            self.consume()
+
+    ### If symbol seen is EOF then generate and set token, otherwise
+    ### throw exception.
+    def default(self,la1):
+        if not la1 :
+            self.uponEOF()
+            self._returnToken = self.makeToken(EOF_TYPE)
+        else:
+            self.raise_NoViableAlt(la1)
+
+    def filterdefault(self,la1,*args):
+        if not la1:
+            self.uponEOF()
+            self._returnToken = self.makeToken(EOF_TYPE)
+            return
+
+        if not args:
+            self.consume()
+            raise TryAgain()
+        else:
+            ### apply filter object
+            self.commit();
+            try:
+                func=args[0]
+                args=args[1:]
+                func(*args)
+            except RecognitionException as e:
+                ## catastrophic failure
+                self.reportError(e);
+                self.consume();
+            raise TryAgain()
+
+    def raise_NoViableAlt(self,la1=None):
+        if not la1: la1 = self.LA(1)
+        fname = self.getFilename()
+        line  = self.getLine()
+        col   = self.getColumn()
+        raise NoViableAltForCharException(la1,fname,line,col)
+
+    def set_return_token(self,_create,_token,_ttype,_offset):
+        if _create and not _token and (not _ttype == SKIP):
+            string = self.text.getString(_offset)
+            _token = self.makeToken(_ttype)
+            _token.setText(string)
+        self._returnToken = _token
+        return _token
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                   CharScannerIterator                          ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class CharScannerIterator:
+
+    def __init__(self,inst):
+        if isinstance(inst,CharScanner):
+            self.inst = inst
+            return
+        raise TypeError("CharScannerIterator requires CharScanner object")
+
+    def __next__(self):
+        assert self.inst
+        item = self.inst.nextToken()
+        if not item or item.isEOF():
+            raise StopIteration()
+        return item
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       BitSet                                   ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+### I'm assuming here that a long is 64bits. It appears however, that
+### a long is of any size. That means we can use a single long as the
+### bitset (!), ie. Python would do almost all the work (TBD).
+
+class BitSet(object):
+    BITS     = 64
+    NIBBLE   = 4
+    LOG_BITS = 6
+    MOD_MASK = BITS -1
+
+    def __init__(self,data=None):
+        if not data:
+            BitSet.__init__(self,[int(0)])
+            return
+        if isinstance(data,int):
+            BitSet.__init__(self,[int(data)])
+            return
+        if isinstance(data,int):
+            BitSet.__init__(self,[data])
+            return
+        if not isinstance(data,list):
+            raise TypeError("BitSet requires integer, long, or " +
+                            "list argument")
+        for x in data:
+            if not isinstance(x,int):
+                raise TypeError(self,"List argument item is " +
+                                "not a long: %s" % (x))
+        self.data = data
+
+    def __str__(self):
+        bits = len(self.data) * BitSet.BITS
+        s = ""
+        for i in range(0,bits):
+            if self.at(i):
+                s += "1"
+            else:
+                s += "o"
+            if not ((i+1) % 10):
+                s += '|%s|' % (i+1)
+        return s
+
+    def __repr__(self):
+        return str(self)
+
+    def member(self,item):
+        if not item:
+            return False
+
+        if isinstance(item,int):
+            return self.at(item)
+
+        if not is_string_type(item):
+            raise TypeError(self,"char or unichar expected: %s" % (item))
+
+        ## char is a (unicode) string with at most lenght 1, ie.
+        ## a char.
+
+        if len(item) != 1:
+            raise TypeError(self,"char expected: %s" % (item))
+
+        ### handle ASCII/UNICODE char
+        num = ord(item)
+
+        ### check whether position num is in bitset
+        return self.at(num)
+
+    def wordNumber(self,bit):
+        return bit >> BitSet.LOG_BITS
+
+    def bitMask(self,bit):
+        pos = bit & BitSet.MOD_MASK  ## bit mod BITS
+        return (1 << pos)
+
+    def set(self,bit,on=True):
+        # grow bitset as required (use with care!)
+        i = self.wordNumber(bit)
+        mask = self.bitMask(bit)
+        if i>=len(self.data):
+            d = i - len(self.data) + 1
+            for x in range(0,d):
+                self.data.append(0)
+            assert len(self.data) == i+1
+        if on:
+            self.data[i] |=  mask
+        else:
+            self.data[i] &= (~mask)
+
+    ### make add an alias for set
+    add = set
+
+    def off(self,bit,off=True):
+        self.set(bit,not off)
+
+    def at(self,bit):
+        i = self.wordNumber(bit)
+        v = self.data[i]
+        m = self.bitMask(bit)
+        return v & m
+
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                      some further funcs                        ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+def illegalarg_ex(func):
+    raise ValueError(
+       "%s is only valid if parser is built for debugging" %
+       (func.__name__))
+
+def runtime_ex(func):
+    raise RuntimeException(
+       "%s is only valid if parser is built for debugging" %
+       (func.__name__))
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       TokenBuffer                              ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class TokenBuffer(object):
+    def __init__(self,stream):
+        self.input = stream
+        self.nMarkers = 0
+        self.markerOffset = 0
+        self.numToConsume = 0
+        self.queue = Queue()
+
+    def reset(self) :
+        self.nMarkers = 0
+        self.markerOffset = 0
+        self.numToConsume = 0
+        self.queue.reset()
+
+    def consume(self) :
+        self.numToConsume += 1
+
+    def fill(self, amount):
+        self.syncConsume()
+        while self.queue.length() < (amount + self.markerOffset):
+            self.queue.append(self.input.nextToken())
+
+    def getInput(self):
+        return self.input
+
+    def LA(self,k) :
+        self.fill(k)
+        return self.queue.elementAt(self.markerOffset + k - 1).type
+
+    def LT(self,k) :
+        self.fill(k)
+        return self.queue.elementAt(self.markerOffset + k - 1)
+
+    def mark(self) :
+        self.syncConsume()
+        self.nMarkers += 1
+        return self.markerOffset
+
+    def rewind(self,mark) :
+        self.syncConsume()
+        self.markerOffset = mark
+        self.nMarkers -= 1
+
+    def syncConsume(self) :
+        while self.numToConsume > 0:
+            if self.nMarkers > 0:
+                # guess mode -- leave leading characters and bump offset.
+                self.markerOffset += 1
+            else:
+                # normal mode -- remove first character
+                self.queue.removeFirst()
+            self.numToConsume -= 1
+
+    def __str__(self):
+        return "(%s,%s,%s,%s,%s)" % (
+           self.input,
+           self.nMarkers,
+           self.markerOffset,
+           self.numToConsume,
+           self.queue)
+
+    def __repr__(self):
+        return str(self)
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       ParserSharedInputState                   ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class ParserSharedInputState(object):
+
+    def __init__(self):
+        self.input = None
+        self.reset()
+
+    def reset(self):
+        self.guessing = 0
+        self.filename = None
+        if self.input:
+            self.input.reset()
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       Parser                                   ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class Parser(object):
+
+    def __init__(self, *args, **kwargs):
+        self.tokenNames = None
+        self.returnAST  = None
+        self.astFactory = None
+        self.tokenTypeToASTClassMap = {}
+        self.ignoreInvalidDebugCalls = False
+        self.traceDepth = 0
+        if not args:
+            self.inputState = ParserSharedInputState()
+            return
+        arg0 = args[0]
+        assert isinstance(arg0,ParserSharedInputState)
+        self.inputState = arg0
+        return
+
+    def getTokenTypeToASTClassMap(self):
+        return self.tokenTypeToASTClassMap
+
+
+    def addMessageListener(self, l):
+        if not self.ignoreInvalidDebugCalls:
+            illegalarg_ex(addMessageListener)
+
+    def addParserListener(self,l) :
+        if (not self.ignoreInvalidDebugCalls) :
+            illegalarg_ex(addParserListener)
+
+    def addParserMatchListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls) :
+            illegalarg_ex(addParserMatchListener)
+
+    def addParserTokenListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls):
+            illegalarg_ex(addParserTokenListener)
+
+    def addSemanticPredicateListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls):
+            illegalarg_ex(addSemanticPredicateListener)
+
+    def addSyntacticPredicateListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls):
+            illegalarg_ex(addSyntacticPredicateListener)
+
+    def addTraceListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls):
+            illegalarg_ex(addTraceListener)
+
+    def consume(self):
+        raise NotImplementedError()
+
+    def _consumeUntil_type(self,tokenType):
+        while self.LA(1) != EOF_TYPE and self.LA(1) != tokenType:
+            self.consume()
+
+    def _consumeUntil_bitset(self, set):
+        while self.LA(1) != EOF_TYPE and not set.member(self.LA(1)):
+            self.consume()
+
+    def consumeUntil(self,arg):
+        if isinstance(arg,int):
+            self._consumeUntil_type(arg)
+        else:
+            self._consumeUntil_bitset(arg)
+
+    def defaultDebuggingSetup(self):
+        pass
+
+    def getAST(self) :
+        return self.returnAST
+
+    def getASTFactory(self) :
+        return self.astFactory
+
+    def getFilename(self) :
+        return self.inputState.filename
+
+    def getInputState(self) :
+        return self.inputState
+
+    def setInputState(self, state) :
+        self.inputState = state
+
+    def getTokenName(self,num) :
+        return self.tokenNames[num]
+
+    def getTokenNames(self) :
+        return self.tokenNames
+
+    def isDebugMode(self) :
+        return self.false
+
+    def LA(self, i):
+        raise NotImplementedError()
+
+    def LT(self, i):
+        raise NotImplementedError()
+
+    def mark(self):
+        return self.inputState.input.mark()
+
+    def _match_int(self,t):
+        if (self.LA(1) != t):
+            raise MismatchedTokenException(
+               self.tokenNames, self.LT(1), t, False, self.getFilename())
+        else:
+            self.consume()
+
+    def _match_set(self, b):
+        if (not b.member(self.LA(1))):
+            raise MismatchedTokenException(
+               self.tokenNames,self.LT(1), b, False, self.getFilename())
+        else:
+            self.consume()
+
+    def match(self,set) :
+        if isinstance(set,int):
+            self._match_int(set)
+            return
+        if isinstance(set,BitSet):
+            self._match_set(set)
+            return
+        raise TypeError("Parser.match requires integer ot BitSet argument")
+
+    def matchNot(self,t):
+        if self.LA(1) == t:
+            raise MismatchedTokenException(
+               tokenNames, self.LT(1), t, True, self.getFilename())
+        else:
+            self.consume()
+
+    def removeMessageListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls):
+            runtime_ex(removeMessageListener)
+
+    def removeParserListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls):
+            runtime_ex(removeParserListener)
+
+    def removeParserMatchListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls):
+            runtime_ex(removeParserMatchListener)
+
+    def removeParserTokenListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls):
+            runtime_ex(removeParserTokenListener)
+
+    def removeSemanticPredicateListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls):
+            runtime_ex(removeSemanticPredicateListener)
+
+    def removeSyntacticPredicateListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls):
+            runtime_ex(removeSyntacticPredicateListener)
+
+    def removeTraceListener(self, l) :
+        if (not self.ignoreInvalidDebugCalls):
+            runtime_ex(removeTraceListener)
+
+    def reportError(self,x) :
+        fmt = "syntax error:"
+        f = self.getFilename()
+        if f:
+            fmt = ("%s:" % f) + fmt
+        if isinstance(x,Token):
+            line = x.getColumn()
+            col  = x.getLine()
+            text = x.getText()
+            fmt  = fmt + 'unexpected symbol at line %s (column %s) : "%s"'
+            print(fmt % (line,col,text), file=sys.stderr)
+        else:
+            print(fmt,str(x), file=sys.stderr)
+
+    def reportWarning(self,s):
+        f = self.getFilename()
+        if f:
+            print("%s:warning: %s" % (f,str(x)))
+        else:
+            print("warning: %s" % (str(x)))
+
+    def rewind(self, pos) :
+        self.inputState.input.rewind(pos)
+
+    def setASTFactory(self, f) :
+        self.astFactory = f
+
+    def setASTNodeClass(self, cl) :
+        self.astFactory.setASTNodeType(cl)
+
+    def setASTNodeType(self, nodeType) :
+        self.setASTNodeClass(nodeType)
+
+    def setDebugMode(self, debugMode) :
+        if (not self.ignoreInvalidDebugCalls):
+            runtime_ex(setDebugMode)
+
+    def setFilename(self, f) :
+        self.inputState.filename = f
+
+    def setIgnoreInvalidDebugCalls(self, value) :
+        self.ignoreInvalidDebugCalls = value
+
+    def setTokenBuffer(self, t) :
+        self.inputState.input = t
+
+    def traceIndent(self):
+        print(" " * self.traceDepth)
+
+    def traceIn(self,rname):
+        self.traceDepth += 1
+        self.trace("> ", rname)
+
+    def traceOut(self,rname):
+        self.trace("< ", rname)
+        self.traceDepth -= 1
+
+    ### wh: moved from ASTFactory to Parser
+    def addASTChild(self,currentAST, child):
+        if not child:
+            return
+        if not currentAST.root:
+            currentAST.root = child
+        elif not currentAST.child:
+            currentAST.root.setFirstChild(child)
+        else:
+            currentAST.child.setNextSibling(child)
+        currentAST.child = child
+        currentAST.advanceChildToEnd()
+
+    ### wh: moved from ASTFactory to Parser
+    def makeASTRoot(self,currentAST,root) :
+        if root:
+            ### Add the current root as a child of new root
+            root.addChild(currentAST.root)
+            ### The new current child is the last sibling of the old root
+            currentAST.child = currentAST.root
+            currentAST.advanceChildToEnd()
+            ### Set the new root
+            currentAST.root = root
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       LLkParser                                ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class LLkParser(Parser):
+
+    def __init__(self, *args, **kwargs):
+        try:
+            arg1 = args[0]
+        except:
+            arg1 = 1
+
+        if isinstance(arg1,int):
+            super(LLkParser,self).__init__()
+            self.k = arg1
+            return
+
+        if isinstance(arg1,ParserSharedInputState):
+            super(LLkParser,self).__init__(arg1)
+            self.set_k(1,*args)
+            return
+
+        if isinstance(arg1,TokenBuffer):
+            super(LLkParser,self).__init__()
+            self.setTokenBuffer(arg1)
+            self.set_k(1,*args)
+            return
+
+        if isinstance(arg1,TokenStream):
+            super(LLkParser,self).__init__()
+            tokenBuf = TokenBuffer(arg1)
+            self.setTokenBuffer(tokenBuf)
+            self.set_k(1,*args)
+            return
+
+        ### unknown argument
+        raise TypeError("LLkParser requires integer, " +
+                        "ParserSharedInputStream or TokenStream argument")
+
+    def consume(self):
+        self.inputState.input.consume()
+
+    def LA(self,i):
+        return self.inputState.input.LA(i)
+
+    def LT(self,i):
+        return self.inputState.input.LT(i)
+
+    def set_k(self,index,*args):
+        try:
+            self.k = args[index]
+        except:
+            self.k = 1
+
+    def trace(self,ee,rname):
+        print(type(self))
+        self.traceIndent()
+        guess = ""
+        if self.inputState.guessing > 0:
+            guess = " [guessing]"
+        print((ee + rname + guess))
+        for i in range(1,self.k+1):
+            if i != 1:
+                print(", ")
+            if self.LT(i) :
+                v = self.LT(i).getText()
+            else:
+                v = "null"
+            print("LA(%s) == %s" % (i,v))
+        print("\n")
+
+    def traceIn(self,rname):
+        self.traceDepth += 1;
+        self.trace("> ", rname);
+
+    def traceOut(self,rname):
+        self.trace("< ", rname);
+        self.traceDepth -= 1;
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                    TreeParserSharedInputState                  ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class TreeParserSharedInputState(object):
+    def __init__(self):
+        self.guessing = 0
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       TreeParser                               ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class TreeParser(object):
+
+    def __init__(self, *args, **kwargs):
+        self.inputState = TreeParserSharedInputState()
+        self._retTree   = None
+        self.tokenNames = []
+        self.returnAST  = None
+        self.astFactory = ASTFactory()
+        self.traceDepth = 0
+
+    def getAST(self):
+        return self.returnAST
+
+    def getASTFactory(self):
+        return self.astFactory
+
+    def getTokenName(self,num) :
+        return self.tokenNames[num]
+
+    def getTokenNames(self):
+        return self.tokenNames
+
+    def match(self,t,set) :
+        assert isinstance(set,int) or isinstance(set,BitSet)
+        if not t or t == ASTNULL:
+            raise MismatchedTokenException(self.getTokenNames(), t,set, False)
+
+        if isinstance(set,int) and t.getType() != set:
+            raise MismatchedTokenException(self.getTokenNames(), t,set, False)
+
+        if isinstance(set,BitSet) and not set.member(t.getType):
+            raise MismatchedTokenException(self.getTokenNames(), t,set, False)
+
+    def matchNot(self,t, ttype) :
+        if not t or (t == ASTNULL) or (t.getType() == ttype):
+            raise MismatchedTokenException(getTokenNames(), t, ttype, True)
+
+    def reportError(self,ex):
+        print("error:",ex, file=sys.stderr)
+
+    def  reportWarning(self, s):
+        print("warning:",s)
+
+    def setASTFactory(self,f):
+        self.astFactory = f
+
+    def setASTNodeType(self,nodeType):
+        self.setASTNodeClass(nodeType)
+
+    def setASTNodeClass(self,nodeType):
+        self.astFactory.setASTNodeType(nodeType)
+
+    def traceIndent(self):
+        print(" " * self.traceDepth)
+
+    def traceIn(self,rname,t):
+        self.traceDepth += 1
+        self.traceIndent()
+        print(("> " + rname + "(" +
+              ifelse(t,str(t),"null") + ")" +
+              ifelse(self.inputState.guessing>0,"[guessing]","")))
+
+    def traceOut(self,rname,t):
+        self.traceIndent()
+        print(("< " + rname + "(" +
+              ifelse(t,str(t),"null") + ")" +
+              ifelse(self.inputState.guessing>0,"[guessing]","")))
+        self.traceDepth -= 1
+
+    ### wh: moved from ASTFactory to TreeParser
+    def addASTChild(self,currentAST, child):
+        if not child:
+            return
+        if not currentAST.root:
+            currentAST.root = child
+        elif not currentAST.child:
+            currentAST.root.setFirstChild(child)
+        else:
+            currentAST.child.setNextSibling(child)
+        currentAST.child = child
+        currentAST.advanceChildToEnd()
+
+    ### wh: moved from ASTFactory to TreeParser
+    def makeASTRoot(self,currentAST,root):
+        if root:
+            ### Add the current root as a child of new root
+            root.addChild(currentAST.root)
+            ### The new current child is the last sibling of the old root
+            currentAST.child = currentAST.root
+            currentAST.advanceChildToEnd()
+            ### Set the new root
+            currentAST.root = root
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###               funcs to work on trees                           ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+def rightmost(ast):
+    if ast:
+        while(ast.right):
+            ast = ast.right
+    return ast
+
+def cmptree(s,t,partial):
+    while(s and t):
+        ### as a quick optimization, check roots first.
+        if not s.equals(t):
+            return False
+
+        ### if roots match, do full list match test on children.
+        if not cmptree(s.getFirstChild(),t.getFirstChild(),partial):
+            return False
+
+        s = s.getNextSibling()
+        t = t.getNextSibling()
+
+    r = ifelse(partial,not t,not s and not t)
+    return r
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                          AST                                   ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class AST(object):
+    def __init__(self):
+        pass
+
+    def addChild(self, c):
+        pass
+
+    def equals(self, t):
+        return False
+
+    def equalsList(self, t):
+        return False
+
+    def equalsListPartial(self, t):
+        return False
+
+    def equalsTree(self, t):
+        return False
+
+    def equalsTreePartial(self, t):
+        return False
+
+    def findAll(self, tree):
+        return None
+
+    def findAllPartial(self, subtree):
+        return None
+
+    def getFirstChild(self):
+        return self
+
+    def getNextSibling(self):
+        return self
+
+    def getText(self):
+        return ""
+
+    def getType(self):
+        return INVALID_TYPE
+
+    def getLine(self):
+        return 0
+
+    def getColumn(self):
+        return 0
+
+    def getNumberOfChildren(self):
+        return 0
+
+    def initialize(self, t, txt):
+        pass
+
+    def initialize(self, t):
+        pass
+
+    def setFirstChild(self, c):
+        pass
+
+    def setNextSibling(self, n):
+        pass
+
+    def setText(self, text):
+        pass
+
+    def setType(self, ttype):
+        pass
+
+    def toString(self):
+        self.getText()
+
+    __str__ = toString
+
+    def toStringList(self):
+        return self.getText()
+
+    def toStringTree(self):
+        return self.getText()
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       ASTNULLType                              ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+### There is only one instance of this class **/
+class ASTNULLType(AST):
+    def __init__(self):
+        AST.__init__(self)
+        pass
+
+    def getText(self):
+        return "<ASTNULL>"
+
+    def getType(self):
+        return NULL_TREE_LOOKAHEAD
+
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       BaseAST                                  ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class BaseAST(AST):
+
+    verboseStringConversion = False
+    tokenNames = None
+
+    def __init__(self):
+        self.down  = None ## kid
+        self.right = None ## sibling
+
+    def addChild(self,node):
+        if node:
+            t = rightmost(self.down)
+            if t:
+                t.right = node
+            else:
+                assert not self.down
+                self.down = node
+
+    def getNumberOfChildren(self):
+        t = self.down
+        n = 0
+        while t:
+            n += 1
+            t = t.right
+        return n
+
+    def doWorkForFindAll(self,v,target,partialMatch):
+        sibling = self
+
+        while sibling:
+            c1 = partialMatch and sibling.equalsTreePartial(target)
+            if c1:
+                v.append(sibling)
+            else:
+                c2 = not partialMatch and sibling.equalsTree(target)
+                if c2:
+                    v.append(sibling)
+
+            ### regardless of match or not, check any children for matches
+            if sibling.getFirstChild():
+                sibling.getFirstChild().doWorkForFindAll(v,target,partialMatch)
+
+            sibling = sibling.getNextSibling()
+
+    ### Is node t equal to 'self' in terms of token type and text?
+    def equals(self,t):
+        if not t:
+            return False
+        return self.getText() == t.getText() and self.getType() == t.getType()
+
+    ### Is t an exact structural and equals() match of this tree.  The
+    ### 'self' reference is considered the start of a sibling list.
+    ###
+    def equalsList(self, t):
+        return cmptree(self, t, partial=False)
+
+    ### Is 't' a subtree of this list?
+    ### The siblings of the root are NOT ignored.
+    ###
+    def equalsListPartial(self,t):
+        return cmptree(self,t,partial=True)
+
+    ### Is tree rooted at 'self' equal to 't'?  The siblings
+    ### of 'self' are ignored.
+    ###
+    def equalsTree(self, t):
+        return self.equals(t) and \
+               cmptree(self.getFirstChild(), t.getFirstChild(), partial=False)
+
+    ### Is 't' a subtree of the tree rooted at 'self'?  The siblings
+    ### of 'self' are ignored.
+    ###
+    def equalsTreePartial(self, t):
+        if not t:
+            return True
+        return self.equals(t) and cmptree(
+           self.getFirstChild(), t.getFirstChild(), partial=True)
+
+    ### Walk the tree looking for all exact subtree matches.  Return
+    ### an ASTEnumerator that lets the caller walk the list
+    ### of subtree roots found herein.
+    def findAll(self,target):
+        roots = []
+
+        ### the empty tree cannot result in an enumeration
+        if not target:
+            return None
+        # find all matches recursively
+        self.doWorkForFindAll(roots, target, False)
+        return roots
+
+    ### Walk the tree looking for all subtrees.  Return
+    ###  an ASTEnumerator that lets the caller walk the list
+    ###  of subtree roots found herein.
+    def findAllPartial(self,sub):
+        roots = []
+
+        ### the empty tree cannot result in an enumeration
+        if not sub:
+            return None
+
+        self.doWorkForFindAll(roots, sub, True)  ### find all matches recursively
+        return roots
+
+    ### Get the first child of this node None if not children
+    def getFirstChild(self):
+        return self.down
+
+    ### Get the next sibling in line after this one
+    def getNextSibling(self):
+        return self.right
+
+    ### Get the token text for this node
+    def getText(self):
+        return ""
+
+    ### Get the token type for this node
+    def getType(self):
+        return 0
+
+    def getLine(self):
+        return 0
+
+    def getColumn(self):
+        return 0
+
+    ### Remove all children */
+    def removeChildren(self):
+        self.down = None
+
+    def setFirstChild(self,c):
+        self.down = c
+
+    def setNextSibling(self, n):
+        self.right = n
+
+    ### Set the token text for this node
+    def setText(self, text):
+        pass
+
+    ### Set the token type for this node
+    def setType(self, ttype):
+        pass
+
+    ### static
+    def setVerboseStringConversion(verbose,names):
+        verboseStringConversion = verbose
+        tokenNames = names
+    setVerboseStringConversion = staticmethod(setVerboseStringConversion)
+
+    ### Return an array of strings that maps token ID to it's text.
+    ##  @since 2.7.3
+    def getTokenNames():
+        return tokenNames
+
+    def toString(self):
+        return self.getText()
+
+    ### return tree as lisp string - sibling included
+    def toStringList(self):
+        ts = self.toStringTree()
+        sib = self.getNextSibling()
+        if sib:
+            ts += sib.toStringList()
+        return ts
+
+    __str__ = toStringList
+
+    ### return tree as string - siblings ignored
+    def toStringTree(self):
+        ts = ""
+        kid = self.getFirstChild()
+        if kid:
+            ts += " ("
+        ts += " " + self.toString()
+        if kid:
+            ts += kid.toStringList()
+            ts += " )"
+        return ts
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       CommonAST                                ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+### Common AST node implementation
+class CommonAST(BaseAST):
+    def __init__(self,token=None):
+        super(CommonAST,self).__init__()
+        self.ttype = INVALID_TYPE
+        self.text  = "<no text>"
+        self.line  = 0
+        self.column= 0
+        self.initialize(token)
+        #assert self.text
+
+    ### Get the token text for this node
+    def getText(self):
+        return self.text
+
+    ### Get the token type for this node
+    def getType(self):
+        return self.ttype
+
+    ### Get the line for this node
+    def getLine(self):
+        return self.line
+
+    ### Get the column for this node
+    def getColumn(self):
+        return self.column
+
+    def initialize(self,*args):
+        if not args:
+            return
+
+        arg0 = args[0]
+
+        if isinstance(arg0,int):
+            arg1 = args[1]
+            self.setType(arg0)
+            self.setText(arg1)
+            return
+
+        if isinstance(arg0,AST) or isinstance(arg0,Token):
+            self.setText(arg0.getText())
+            self.setType(arg0.getType())
+            self.line = arg0.getLine()
+            self.column = arg0.getColumn()
+            return
+
+    ### Set the token text for this node
+    def setText(self,text_):
+        assert is_string_type(text_)
+        self.text = text_
+
+    ### Set the token type for this node
+    def setType(self,ttype_):
+        assert isinstance(ttype_,int)
+        self.ttype = ttype_
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                     CommonASTWithHiddenTokens                  ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class CommonASTWithHiddenTokens(CommonAST):
+
+    def __init__(self,*args):
+        CommonAST.__init__(self,*args)
+        self.hiddenBefore = None
+        self.hiddenAfter  = None
+
+    def getHiddenAfter(self):
+        return self.hiddenAfter
+
+    def getHiddenBefore(self):
+        return self.hiddenBefore
+
+    def initialize(self,*args):
+        CommonAST.initialize(self,*args)
+        if args and isinstance(args[0],Token):
+            assert isinstance(args[0],CommonHiddenStreamToken)
+            self.hiddenBefore = args[0].getHiddenBefore()
+            self.hiddenAfter  = args[0].getHiddenAfter()
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       ASTPair                                  ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class ASTPair(object):
+    def __init__(self):
+        self.root = None          ### current root of tree
+        self.child = None         ### current child to which siblings are added
+
+    ### Make sure that child is the last sibling */
+    def advanceChildToEnd(self):
+        if self.child:
+            while self.child.getNextSibling():
+                self.child = self.child.getNextSibling()
+
+    ### Copy an ASTPair.  Don't call it clone() because we want type-safety */
+    def copy(self):
+        tmp = ASTPair()
+        tmp.root = self.root
+        tmp.child = self.child
+        return tmp
+
+    def toString(self):
+        r = ifelse(not root,"null",self.root.getText())
+        c = ifelse(not child,"null",self.child.getText())
+        return "[%s,%s]" % (r,c)
+
+    __str__ = toString
+    __repr__ = toString
+
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       ASTFactory                               ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class ASTFactory(object):
+    def __init__(self,table=None):
+        self._class = None
+        self._classmap = ifelse(table,table,None)
+
+    def create(self,*args):
+        if not args:
+            return self.create(INVALID_TYPE)
+
+        arg0 = args[0]
+        arg1 = None
+        arg2 = None
+
+        try:
+            arg1 = args[1]
+            arg2 = args[2]
+        except:
+            pass
+
+        # ctor(int)
+        if isinstance(arg0,int) and not arg2:
+            ### get class for 'self' type
+            c = self.getASTNodeType(arg0)
+            t = self.create(c)
+            if t:
+                t.initialize(arg0, ifelse(arg1,arg1,""))
+            return t
+
+        # ctor(int,something)
+        if isinstance(arg0,int) and arg2:
+            t = self.create(arg2)
+            if t:
+                t.initialize(arg0,arg1)
+            return t
+
+        # ctor(AST)
+        if isinstance(arg0,AST):
+            t = self.create(arg0.getType())
+            if t:
+                t.initialize(arg0)
+            return t
+
+        # ctor(token)
+        if isinstance(arg0,Token) and not arg1:
+            ttype = arg0.getType()
+            assert isinstance(ttype,int)
+            t = self.create(ttype)
+            if t:
+                t.initialize(arg0)
+            return t
+
+        # ctor(token,class)
+        if isinstance(arg0,Token) and arg1:
+            assert isinstance(arg1,type)
+            assert issubclass(arg1,AST)
+            # this creates instance of 'arg1' using 'arg0' as
+            # argument. Wow, that's magic!
+            t = arg1(arg0)
+            assert t and isinstance(t,AST)
+            return t
+
+        # ctor(class)
+        if isinstance(arg0,type):
+            ### next statement creates instance of type (!)
+            t = arg0()
+            assert isinstance(t,AST)
+            return t
+
+
+    def setASTNodeClass(self,className=None):
+        if not className:
+            return
+        assert isinstance(className,type)
+        assert issubclass(className,AST)
+        self._class = className
+
+    ### kind of misnomer - use setASTNodeClass instead.
+    setASTNodeType = setASTNodeClass
+
+    def getASTNodeClass(self):
+        return self._class
+
+
+
+    def getTokenTypeToASTClassMap(self):
+        return self._classmap
+
+    def setTokenTypeToASTClassMap(self,amap):
+        self._classmap = amap
+
+    def error(self, e):
+        import sys
+        print(e, file=sys.stderr)
+
+    def setTokenTypeASTNodeType(self, tokenType, className):
+        """
+        Specify a mapping between a token type and a (AST) class.
+        """
+        if not self._classmap:
+            self._classmap = {}
+
+        if not className:
+            try:
+                del self._classmap[tokenType]
+            except:
+                pass
+        else:
+            ### here we should also perform actions to ensure that
+            ### a. class can be loaded
+            ### b. class is a subclass of AST
+            ###
+            assert isinstance(className,type)
+            assert issubclass(className,AST)  ## a & b
+            ### enter the class
+            self._classmap[tokenType] = className
+
+    def getASTNodeType(self,tokenType):
+        """
+        For a given token type return the AST node type. First we
+        lookup a mapping table, second we try _class
+        and finally we resolve to "antlr.CommonAST".
+        """
+
+        # first
+        if self._classmap:
+            try:
+                c = self._classmap[tokenType]
+                if c:
+                    return c
+            except:
+                pass
+        # second
+        if self._class:
+            return self._class
+
+        # default
+        return CommonAST
+
+    ### methods that have been moved to file scope - just listed
+    ### here to be somewhat consistent with original API
+    def dup(self,t):
+        return antlr.dup(t,self)
+
+    def dupList(self,t):
+        return antlr.dupList(t,self)
+
+    def dupTree(self,t):
+        return antlr.dupTree(t,self)
+
+    ### methods moved to other classes
+    ### 1. makeASTRoot  -> Parser
+    ### 2. addASTChild  -> Parser
+
+    ### non-standard: create alias for longish method name
+    maptype = setTokenTypeASTNodeType
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###                       ASTVisitor                               ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+class ASTVisitor(object):
+    def __init__(self,*args):
+        pass
+
+    def visit(self,ast):
+        pass
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+###               static methods and variables                     ###
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx###
+
+ASTNULL = ASTNULLType()
+
+### wh: moved from ASTFactory as there's nothing ASTFactory-specific
+### in this method.
+def make(*nodes):
+    if not nodes:
+        return None
+
+    for i in range(0,len(nodes)):
+        node = nodes[i]
+        if node:
+            assert isinstance(node,AST)
+
+    root = nodes[0]
+    tail = None
+    if root:
+        root.setFirstChild(None)
+
+    for i in range(1,len(nodes)):
+        if not nodes[i]:
+            continue
+        if not root:
+            root = tail = nodes[i]
+        elif not tail:
+            root.setFirstChild(nodes[i])
+            tail = root.getFirstChild()
+        else:
+            tail.setNextSibling(nodes[i])
+            tail = tail.getNextSibling()
+
+        ### Chase tail to last sibling
+        while tail.getNextSibling():
+            tail = tail.getNextSibling()
+    return root
+
+def dup(t,factory):
+    if not t:
+        return None
+
+    if factory:
+        dup_t = factory.create(t.__class__)
+    else:
+        raise TypeError("dup function requires ASTFactory argument")
+    dup_t.initialize(t)
+    return dup_t
+
+def dupList(t,factory):
+    result = dupTree(t,factory)
+    nt = result
+    while t:
+        ## for each sibling of the root
+        t = t.getNextSibling()
+        nt.setNextSibling(dupTree(t,factory))
+        nt = nt.getNextSibling()
+    return result
+
+def dupTree(t,factory):
+    result = dup(t,factory)
+    if t:
+        result.setFirstChild(dupList(t.getFirstChild(),factory))
+    return result
+
+###xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+### $Id: antlr.py 3750 2009-02-13 00:13:04Z sjmachin $
+
+# Local Variables:    ***
+# mode: python        ***
+# py-indent-offset: 4 ***
+# End:                ***