--- a/src/FOL/ex/Intro.thy Thu Jul 09 22:04:10 2009 +0200
+++ b/src/FOL/ex/Intro.thy Thu Jul 09 22:09:58 2009 +0200
@@ -1,5 +1,4 @@
(* Title: FOL/ex/Intro.thy
- ID: $Id$
Author: Lawrence C Paulson, Cambridge University Computer Laboratory
Copyright 1992 University of Cambridge