diff --git a/runtime/doc/diff.txt b/runtime/doc/diff.txt
index aaf21b0..8a6c7af 100644
--- a/runtime/doc/diff.txt
+++ b/runtime/doc/diff.txt
@@ -1,4 +1,4 @@
-*diff.txt*      For Vim version 7.0aa.  Last change: 2006 Feb 18
+*diff.txt*      For Vim version 7.0aa.  Last change: 2006 Mar 14
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -378,7 +378,7 @@
 
 Example (this does the same as 'patchexpr' being empty): >
 
-	let patchexpr=MyPatch
+	let patchexpr=MyPatch()
 	function MyPatch
 	   :call system("patch -o " . v:fname_out . " " . v:fname_in .
 	   \  " < " . v:fname_diff)
diff --git a/runtime/doc/pi_netrw.txt b/runtime/doc/pi_netrw.txt
index ae39789..5d054e9 100644
--- a/runtime/doc/pi_netrw.txt
+++ b/runtime/doc/pi_netrw.txt
@@ -1,4 +1,4 @@
-*pi_netrw.txt*  For Vim version 7.0.  Last change: Mar 09, 2006
+*pi_netrw.txt*  For Vim version 7.0.  Last change: Mar 10, 2006
 
 		VIM REFERENCE MANUAL    by Charles E. Campbell, Jr.
 
diff --git a/runtime/doc/tags b/runtime/doc/tags
index a6b407a..d27b911 100644
--- a/runtime/doc/tags
+++ b/runtime/doc/tags
@@ -1965,6 +1965,8 @@
 :dsp	tagsrch.txt	/*:dsp*
 :dsplit	tagsrch.txt	/*:dsplit*
 :e	editing.txt	/*:e*
+:ea	undo.txt	/*:ea*
+:earlier	undo.txt	/*:earlier*
 :ec	eval.txt	/*:ec*
 :echo	eval.txt	/*:echo*
 :echoe	eval.txt	/*:echoe*
@@ -2142,6 +2144,8 @@
 :lang	mlang.txt	/*:lang*
 :language	mlang.txt	/*:language*
 :last	editing.txt	/*:last*
+:lat	undo.txt	/*:lat*
+:later	undo.txt	/*:later*
 :lb	quickfix.txt	/*:lb*
 :lbuffer	quickfix.txt	/*:lbuffer*
 :lc	editing.txt	/*:lc*
@@ -5281,7 +5285,9 @@
 g&	change.txt	/*g&*
 g'	motion.txt	/*g'*
 g'a	motion.txt	/*g'a*
+g+	undo.txt	/*g+*
 g,	motion.txt	/*g,*
+g-	undo.txt	/*g-*
 g0	motion.txt	/*g0*
 g8	various.txt	/*g8*
 g:DrChipTopLvlMenu	pi_netrw.txt	/*g:DrChipTopLvlMenu*
@@ -6254,6 +6260,7 @@
 new-session-files	version5.txt	/*new-session-files*
 new-spell	version7.txt	/*new-spell*
 new-tab-pages	version7.txt	/*new-tab-pages*
+new-undo-branches	version7.txt	/*new-undo-branches*
 new-unlisted-buffers	version6.txt	/*new-unlisted-buffers*
 new-user-defined	version5.txt	/*new-user-defined*
 new-user-manual	version6.txt	/*new-user-manual*
@@ -7212,6 +7219,7 @@
 underline	syntax.txt	/*underline*
 undo	undo.txt	/*undo*
 undo-blocks	undo.txt	/*undo-blocks*
+undo-branches	undo.txt	/*undo-branches*
 undo-commands	undo.txt	/*undo-commands*
 undo-redo	undo.txt	/*undo-redo*
 undo-remarks	undo.txt	/*undo-remarks*
diff --git a/runtime/doc/undo.txt b/runtime/doc/undo.txt
index bdb7ffb..fdfa71d 100644
--- a/runtime/doc/undo.txt
+++ b/runtime/doc/undo.txt
@@ -1,4 +1,4 @@
-*undo.txt*      For Vim version 7.0aa.  Last change: 2006 Feb 28
+*undo.txt*      For Vim version 7.0aa.  Last change: 2006 Mar 14
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -11,7 +11,8 @@
 1. Undo and redo commands	|undo-commands|
 2. Two ways of undo		|undo-two-ways|
 3. Undo blocks			|undo-blocks|
-4. Remarks about undo		|undo-remarks|
+4. Undo branches		|undo-branches|
+5. Remarks about undo		|undo-remarks|
 
 ==============================================================================
 1. Undo and redo commands				*undo-commands*
@@ -102,7 +103,88 @@
 change.
 
 ==============================================================================
-4. Remarks about undo					*undo-remarks*
+4. Undo branches					*undo-branches*
+
+Above we only discussed one line of undo.  But it is also possible to branch
+off.  This happens when you undo a few changes and then make a new change.
+The undone changes become a branch.  You can go to that branch with the
+following commands.
+
+What matters here is the order in which the changes are made.  Undo and redo
+are not considered changes in this context.  After each change you have a new
+state of the text.
+
+							*g-*
+g-			Go to older text state.  With a count repeat that many
+			times.  {not in Vi}
+							*:ea* *:earlier*
+:earlier {count}	Go to older text state {count} times.
+:earlier {N}s		Go to older text state about {N} seconds before.
+:earlier {N}m		Go to older text state about {N} minutes before.
+:earlier {N}h		Go to older text state about {N} hours before.
+
+							*g+*
+g+			Go to newer text state.  With a count repeat that many
+			times.  {not in Vi}
+							*:lat* *:later*
+:later {count}		Go to newer text state {count} times.
+:later {N}s		Go to newer text state about {N} seconds later.
+:later {N}m		Go to newer text state about {N} minutes later.
+:later {N}h		Go to newer text state about {N} hours later.
+
+Note that text states will become unreachable when undo information is cleared
+for 'undolevels'.
+
+Don't be surprised when moving through time shows multiple changes to take
+place at a time.  This happens when moving through the undo tree and then
+making a new change.
+
+EXAMPLE
+
+Start with this text:
+	one two three ~
+
+Delete the first word by pressing "x" three times:
+	ne two three ~
+	e two three ~
+	 two three ~
+
+Now undo that by pressing "u" three times:
+	e two three ~
+	ne two three ~
+	one two three ~
+
+Delete the second word by pressing "x" three times:
+	one wo three ~
+	one o three ~
+	one  three ~
+
+Now undo that by using "g-" three times:
+	one o three ~
+	one wo three ~
+	one two three ~
+
+Continue going back in time by pressing "g-" one more time:
+	 two three ~
+
+You are now back in the first undo branch, after deleting "one".  Repeating
+"g-" will now bring you back to the original text:
+	e two three ~
+	ne two three ~
+	one two three ~
+
+Jump to the last change with ":later 1h":
+	one  three ~
+
+And back to the start again with ":earlier 1h":
+	one two three ~
+
+
+Note that using "u" and CTRL-R will not get you to all possible text states
+while repeating "g-" and "g+" does.
+
+==============================================================================
+5. Remarks about undo					*undo-remarks*
 
 The number of changes that are remembered is set with the 'undolevels' option.
 If it is zero, the Vi-compatible way is always used.  If it is negative no