First step in the Vim 7.3 branch.  Changed version numbers.
diff --git a/runtime/doc/usr_23.txt b/runtime/doc/usr_23.txt
index 03367b8..cd71e22 100644
--- a/runtime/doc/usr_23.txt
+++ b/runtime/doc/usr_23.txt
@@ -1,4 +1,4 @@
-*usr_23.txt*	For Vim version 7.2.  Last change: 2006 Apr 24
+*usr_23.txt*	For Vim version 7.3a.  Last change: 2006 Apr 24
 
 		     VIM USER MANUAL - by Bram Moolenaar