Updated and new runtime files.
diff --git a/runtime/doc/autocmd.txt b/runtime/doc/autocmd.txt
index 20523ea..c52a7f5 100644
--- a/runtime/doc/autocmd.txt
+++ b/runtime/doc/autocmd.txt
@@ -1,4 +1,4 @@
-*autocmd.txt*   For Vim version 7.4.  Last change: 2015 Jul 10
+*autocmd.txt*   For Vim version 7.4.  Last change: 2015 Jul 20
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -758,13 +758,15 @@
 				Is not triggered on startup and for the 'key'
 				option for obvious reasons.
 
-				Note: It's a bad idea, to reset an option
-				during this autocommand, since this will
-				probably break plugins. You can always use
-				|noa| to prevent triggering this autocommand.
-				Could be used, to check for existence of the
-				'backupdir' and 'undodir' options and create
-				directories, if they don't exist yet.
+				Usage example: Check for the existence of the
+				directory in the 'backupdir' and 'undodir'
+				options, create the directory if it doesn't
+				exist yet.
+
+				Note: It's a bad idea to reset an option
+				during this autocommand, this may break a
+				plugin. You can always use `:noa` to prevent
+				triggering this autocommand.
 
 							*QuickFixCmdPre*
 QuickFixCmdPre			Before a quickfix command is run (|:make|,