Fix that :py3file was not working.
diff --git a/runtime/doc/if_pyth.txt b/runtime/doc/if_pyth.txt
index e3822ec..953d95b 100644
--- a/runtime/doc/if_pyth.txt
+++ b/runtime/doc/if_pyth.txt
@@ -1,4 +1,4 @@
-*if_pyth.txt*   For Vim version 7.3b.  Last change: 2010 Jul 20
+*if_pyth.txt*   For Vim version 7.3b.  Last change: 2010 Jul 21
 
 
 		  VIM REFERENCE MANUAL    by Paul Moore
@@ -335,7 +335,7 @@
 
 Python 3 support can exist next to Python 2.x.
 
-*:py3* *:py3file*
+*:py3* *:python3* *:py3file*
 
 TODO