Updated runtime files.
diff --git a/runtime/doc/undo.txt b/runtime/doc/undo.txt
index f1990c9..2589a15 100644
--- a/runtime/doc/undo.txt
+++ b/runtime/doc/undo.txt
@@ -1,4 +1,4 @@
-*undo.txt* For Vim version 7.4. Last change: 2012 Mar 04
+*undo.txt* For Vim version 7.4. Last change: 2013 Aug 22
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -57,7 +57,7 @@
2. Two ways of undo *undo-two-ways*
How undo and redo commands work depends on the 'u' flag in 'cpoptions'.
-There is the Vim way ('u' excluded) and the vi-compatible way ('u' included).
+There is the Vim way ('u' excluded) and the Vi-compatible way ('u' included).
In the Vim way, "uu" undoes two changes. In the Vi-compatible way, "uu" does
nothing (undoes an undo).