Updated runtime files.
diff --git a/runtime/doc/fold.txt b/runtime/doc/fold.txt
index 60704c5..cf92096 100644
--- a/runtime/doc/fold.txt
+++ b/runtime/doc/fold.txt
@@ -1,4 +1,4 @@
-*fold.txt* For Vim version 7.2. Last change: 2010 Feb 21
+*fold.txt* For Vim version 7.2. Last change: 2010 May 13
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -127,6 +127,9 @@
yet. And it returns the level at the start of the line, while a fold might
end in that line.
+It may happened that folds are not updated properly. You can use |zx| or |zX|
+to force updating folds.
+
SYNTAX *fold-syntax*
@@ -352,9 +355,13 @@
*zx*
zx Update folds: Undo manually opened and closed folds: re-apply
'foldlevel', then do "zv": View cursor line.
+ Also forces recomputing folds. This is useful when using
+ 'foldexpr' and the buffer is changed in a way that results in
+ folds not to be updated properly.
*zX*
zX Undo manually opened and closed folds: re-apply 'foldlevel'.
+ Also forces recomputing folds, like |zx|.
*zm*
zm Fold more: Subtract one from 'foldlevel'. If 'foldlevel' was