--- a/src/HOL/IMP/AExp.thy Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/IMP/AExp.thy Sun Nov 02 18:21:45 2014 +0100
@@ -1,4 +1,4 @@
-header "Arithmetic and Boolean Expressions"
+section "Arithmetic and Boolean Expressions"
theory AExp imports Main begin