Updated runtime files.
diff --git a/runtime/doc/undo.txt b/runtime/doc/undo.txt
index e9406e6..e9ed1b2 100644
--- a/runtime/doc/undo.txt
+++ b/runtime/doc/undo.txt
@@ -1,4 +1,4 @@
-*undo.txt* For Vim version 7.3. Last change: 2010 Dec 19
+*undo.txt* For Vim version 7.3. Last change: 2011 Aug 02
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -35,8 +35,10 @@
:red[o] Redo one change which was undone. {Vi: no redo}
*U*
-U Undo all latest changes on one line. {Vi: while not
- moved off of it}
+U Undo all latest changes on one line, the line where
+ the latest change was made. |U| itself also counts as
+ a change, and thus |U| undoes a previous |U|.
+ {Vi: while not moved off of the last modified line}
The last changes are remembered. You can use the undo and redo commands above
to revert the text to how it was before each change. You can also apply the