diff --git a/PBGitCommit.h b/PBGitCommit.h
index edee41e..2194608 100644
--- a/PBGitCommit.h
+++ b/PBGitCommit.h
@@ -17,6 +17,7 @@
 	NSString* details;
 	NSArray* parents;
 	NSDate* date;
+	char sign;
 	PBGitRepository* repository;
 }
 
@@ -28,6 +29,7 @@
 @property (retain) NSArray* parents;
 @property (copy) NSDate* date;
 @property (readonly) NSString* dateString;
+@property (assign) char sign;
 
 @property (readonly) NSString* details;
 @property (readonly) PBGitTree* tree;
diff --git a/PBGitCommit.m b/PBGitCommit.m
index 7cb7a7b..ff94454 100644
--- a/PBGitCommit.m
+++ b/PBGitCommit.m
@@ -11,7 +11,7 @@
 
 @implementation PBGitCommit
 
-@synthesize sha, repository, subject, author, date, parents;
+@synthesize sha, repository, subject, author, date, parents, sign;
 
 
 - (NSString *) dateString
diff --git a/PBGitGrapher.m b/PBGitGrapher.m
index df7d87a..5dbcd46 100644
--- a/PBGitGrapher.m
+++ b/PBGitGrapher.m
@@ -129,7 +129,7 @@
 		
 		++row;
 		previous = [[PBGraphCellInfo alloc] initWithPosition:newPos andLines:lines];
-
+		previous.sign = commit.sign;
 		if (refs && [refs objectForKey:commit.sha])
 			previous.refs = [refs objectForKey:commit.sha];
 
diff --git a/PBGitRevList.m b/PBGitRevList.m
index 57d7898..23f7582 100644
--- a/PBGitRevList.m
+++ b/PBGitRevList.m
@@ -56,9 +56,16 @@
 - (void) walkRevisionListWithSpecifier: (PBGitRevSpecifier*) rev
 {
 	
-	NSMutableArray * newArray = [NSMutableArray array];
+	NSMutableArray* newArray = [NSMutableArray array];
+	NSMutableArray* arguments;
 	NSDate* start = [NSDate date];
-	NSMutableArray* arguments = [NSMutableArray arrayWithObjects:@"log", @"--topo-order", @"--pretty=format:%H\01%an\01%s\01%P\01%at", nil];
+	BOOL showSign = [rev hasLeftRight];
+
+	if (showSign)
+		arguments = [NSMutableArray arrayWithObjects:@"log", @"--topo-order", @"--pretty=format:%H\01%an\01%s\01%P\01%at\01%m", nil];
+	else
+		arguments = [NSMutableArray arrayWithObjects:@"log", @"--topo-order", @"--pretty=format:%H\01%an\01%s\01%P\01%at", nil];
+
 	if (!rev)
 		[arguments addObject:@"HEAD"];
 	else
@@ -100,7 +107,9 @@
 		newCommit.subject = [components objectAtIndex:2];
 		newCommit.author = [components objectAtIndex:1];
 		newCommit.date = [NSDate dateWithTimeIntervalSince1970:[[components objectAtIndex:4] intValue]];
-		
+		if (showSign)
+			newCommit.sign = [[components objectAtIndex:5] characterAtIndex:0];
+
 		[newArray addObject: newCommit];
 		num++;
 		if (num % 10000 == 0)
diff --git a/PBGitRevSpecifier.h b/PBGitRevSpecifier.h
index cd9eb79..5477786 100644
--- a/PBGitRevSpecifier.h
+++ b/PBGitRevSpecifier.h
@@ -20,6 +20,7 @@
 - (BOOL) isSimpleRef;
 - (NSString*) simpleRef;
 - (BOOL) hasPathLimiter;
+- (BOOL) hasLeftRight;
 
 - (BOOL) isEqualTo: (PBGitRevSpecifier*) other;
 @property(readonly) NSString* description;
diff --git a/PBGitRevSpecifier.m b/PBGitRevSpecifier.m
index d3a99f7..55c2dcb 100644
--- a/PBGitRevSpecifier.m
+++ b/PBGitRevSpecifier.m
@@ -55,6 +55,14 @@
 	return NO;
 }
 
+- (BOOL) hasLeftRight
+{
+	for (NSString* param in parameters)
+		if ([param isEqualToString:@"--left-right"])
+			return YES;
+	return NO;
+}
+	
 - (BOOL) isEqualTo: (PBGitRevSpecifier*) other
 {
 	if ([self isSimpleRef] ^ [other isSimpleRef])
diff --git a/PBGitRevisionCell.m b/PBGitRevisionCell.m
index d88c3ad..8a50c03 100644
--- a/PBGitRevisionCell.m
+++ b/PBGitRevisionCell.m
@@ -108,20 +108,21 @@
 	
 }
 
-- (void) drawCircleForColumn: (int) c inRect: (NSRect) r
+- (void) drawCircleInRect: (NSRect) r
 {
-	[[NSColor blackColor] set];
 
+	int c = cellInfo.position;
 	int columnWidth = 10;
 	NSPoint origin = r.origin;
 	NSPoint columnOrigin = { origin.x + columnWidth * c, origin.y};
-	
+
 	NSRect oval = { columnOrigin.x - 5, columnOrigin.y + r.size.height * 0.5 - 5, 10, 10};
 
 	
 	NSBezierPath * path = [NSBezierPath bezierPath];
 	path = [NSBezierPath bezierPathWithOvalInRect:oval];
-	//[[col objectAtIndex:cellInfo.columns[c].color] set];
+
+	[[NSColor blackColor] set];
 	[path fill];
 	
 	NSRect smallOval = { columnOrigin.x - 3, columnOrigin.y + r.size.height * 0.5 - 3, 6, 6};
@@ -130,6 +131,38 @@
 	[path fill];	
 }
 
+- (void) drawTriangleInRect: (NSRect) r sign: (char) sign
+{
+	int c = cellInfo.position;
+	int columnHeight = 10;
+	int columnWidth = 8;
+
+	NSPoint top;
+	if (sign == '<')
+		top.x = round(r.origin.x) + 10 * c + 4;
+	else {
+		top.x = round(r.origin.x) + 10 * c - 4;
+		columnWidth *= -1;
+	}
+	top.y = r.origin.y + (r.size.height - columnHeight) / 2;
+
+	NSBezierPath * path = [NSBezierPath bezierPath];
+	// Start at top
+	[path moveToPoint: NSMakePoint(top.x, top.y)];
+	// Go down
+	[path lineToPoint: NSMakePoint(top.x, top.y + columnHeight)];
+	// Go left top
+	[path lineToPoint: NSMakePoint(top.x - columnWidth, top.y + columnHeight / 2)];
+	// Go to top again
+	[path closePath];
+
+	[[NSColor whiteColor] set];
+	[path fill];
+	[[NSColor blackColor] set];
+	[path setLineWidth: 2];
+	[path stroke];
+}
+
 - (NSMutableDictionary*) attributesForRefLabelSelected: (BOOL) selected
 {
 	NSMutableDictionary *attributes = [[[NSMutableDictionary alloc] initWithCapacity:2] autorelease];
@@ -213,7 +246,10 @@
 			[self drawLineFromColumn: line.from toColumn: line.to inRect:ownRect offset: 0 color:line.colorIndex];
 	}
 
-	[self drawCircleForColumn: cellInfo.position inRect: ownRect];
+	if (cellInfo.sign == '<' || cellInfo.sign == '>')
+		[self drawTriangleInRect: ownRect sign: cellInfo.sign];
+	else
+		[self drawCircleInRect: ownRect];
 
 	if (cellInfo.refs)
 		[self drawRefsInRect:&rect];
diff --git a/PBGraphCellInfo.h b/PBGraphCellInfo.h
index c399441..61139ea 100644
--- a/PBGraphCellInfo.h
+++ b/PBGraphCellInfo.h
@@ -14,11 +14,13 @@
 	int position;
 	NSArray* lines;
 	int numColumns;
+	char sign;	
 	NSArray* refs;
 }
 @property(readonly)  NSArray* lines;
 @property(retain) NSArray* refs;
 @property(assign)  int position, numColumns;
+@property(assign) char sign;
 
 - (id)initWithPosition: (int) p andLines: (NSArray*) l;
 
diff --git a/PBGraphCellInfo.m b/PBGraphCellInfo.m
index 8beff21..c6d3412 100644
--- a/PBGraphCellInfo.m
+++ b/PBGraphCellInfo.m
@@ -10,7 +10,7 @@
 
 
 @implementation PBGraphCellInfo
-@synthesize lines, position, numColumns, refs;
+@synthesize lines, position, numColumns, refs, sign;
 - (id)initWithPosition: (int) p andLines: (NSArray*) l
 {
 	position = p;