diff --git a/docs/user/advanced.rst b/docs/user/advanced.rst
index d8c142c9..a987dff4 100644
--- a/docs/user/advanced.rst
+++ b/docs/user/advanced.rst
@@ -75,8 +75,42 @@ request, and then the request's headers::
 
     >>> r.request.headers
     {'Accept-Encoding': 'identity, deflate, compress, gzip',
-    'Accept': '*/*', 'User-Agent': 'python-requests/0.13.1'}
+    'Accept': '*/*', 'User-Agent': 'python-requests/1.2.0'}
 
+Prepared Requests
+-----------------
+
+Whenever you receive a :class:`Response <requests.models.Response>` object 
+from an API call or a Session call, the ``request`` attribute is actually the 
+``PreparedRequest`` that was used. In some cases you may wish to do some extra 
+work to the body or headers (or anything else really) before sending a 
+request. The simple recipe for this is the following::
+
+    from requests import Request, Session
+
+    s = Session()
+    prepped = Request('GET',  # or any other method, 'POST', 'PUT', etc.
+                      url,
+                      data=data
+                      headers=headers
+                      # ...
+                      ).prepare()
+    # do something with prepped.body
+    # do something with prepped.headers
+    resp = s.send(prepped,
+                  stream=stream,
+                  verify=verify,
+                  proxies=proxies,
+                  cert=cert,
+                  timeout=timeout,
+                  # etc.
+                  )
+    print(resp.status_code)
+
+Since you are not doing anything special with the ``Request`` object, you 
+prepare it immediately and modified the ``PreparedRequest`` object. You then 
+send that with the other parameters you would have sent to ``requests.*`` or 
+``Sesssion.*``. 
 
 SSL Cert Verification
 ---------------------
diff --git a/requests/sessions.py b/requests/sessions.py
index de0d9d67..ff40a6cb 100644
--- a/requests/sessions.py
+++ b/requests/sessions.py
@@ -274,12 +274,8 @@ class Session(SessionRedirectMixin):
         :param allow_redirects: (optional) Boolean. Set to True by default.
         :param proxies: (optional) Dictionary mapping protocol to the URL of
             the proxy.
-        :param return_response: (optional) If False, an un-sent Request object
-            will returned.
-        :param config: (optional) A configuration dictionary. See
-            ``request.defaults`` for allowed keys and their default values.
-        :param prefetch: (optional) whether to immediately download the response
-            content. Defaults to ``True``.
+        :param stream: (optional) whether to immediately download the response
+            content. Defaults to ``False``.
         :param verify: (optional) if ``True``, the SSL cert will be verified.
             A CA_BUNDLE path can also be provided.
         :param cert: (optional) if String, path to ssl client cert file (.pem).