--- a/src/CCL/Trancl.thy Sun Nov 02 18:21:14 2014 +0100
+++ b/src/CCL/Trancl.thy Sun Nov 02 18:21:45 2014 +0100
@@ -3,7 +3,7 @@
Copyright 1993 University of Cambridge
*)
-header {* Transitive closure of a relation *}
+section {* Transitive closure of a relation *}
theory Trancl
imports CCL