diff -r e8d4606e6502 -r 3f7d67927fe2 src/CCL/ex/Nat.thy
--- a/src/CCL/ex/Nat.thy	Mon Feb 05 13:44:28 1996 +0100
+++ b/src/CCL/ex/Nat.thy	Mon Feb 05 14:44:09 1996 +0100
@@ -1,6 +1,6 @@
-(*  Title: 	CCL/ex/nat.thy
+(*  Title:      CCL/ex/nat.thy
     ID:         $Id$
-    Author: 	Martin Coen, Cambridge University Computer Laboratory
+    Author:     Martin Coen, Cambridge University Computer Laboratory
     Copyright   1993  University of Cambridge
 
 Programs defined over the natural numbers