updated for version 7.0072
diff --git a/runtime/doc/diff.txt b/runtime/doc/diff.txt
index 391629b..7d63831 100644
--- a/runtime/doc/diff.txt
+++ b/runtime/doc/diff.txt
@@ -1,4 +1,4 @@
-*diff.txt* For Vim version 7.0aa. Last change: 2005 Mar 08
+*diff.txt* For Vim version 7.0aa. Last change: 2005 Apr 26
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -161,6 +161,8 @@
nodiff" before hiding it.
*:diffu* *:diffupdate*
+:diffu[pdate] Update the diff highlighting and folds.
+
Vim attempts to keep the differences updated when you make changes to the
text. This mostly takes care of inserted and deleted lines. Changes within a
line and more complicated changes do not cause the differences to be updated.