--- a/src/HOL/ex/Arith_Examples.thy Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/ex/Arith_Examples.thy Sun Nov 02 18:21:45 2014 +0100
@@ -2,7 +2,7 @@
Author: Tjark Weber
*)
-header {* Arithmetic *}
+section {* Arithmetic *}
theory Arith_Examples
imports Main