--- a/IOA/example/Lemmas.thy	Wed Nov 09 19:50:36 1994 +0100
+++ b/IOA/example/Lemmas.thy	Wed Nov 09 19:51:09 1994 +0100
@@ -1,1 +1,9 @@
+(*  Title:      HOL/IOA/example/Lemmas.thy
+    ID:         $Id$
+    Author:     Tobias Nipkow & Konrad Slind
+    Copyright   1994  TU Muenchen
+
+Arithmetic lemmas
+*)
+
 Lemmas = Arith