--- a/src/CCL/Gfp.thy Sun Nov 02 18:21:14 2014 +0100
+++ b/src/CCL/Gfp.thy Sun Nov 02 18:21:45 2014 +0100
@@ -3,7 +3,7 @@
Copyright 1992 University of Cambridge
*)
-header {* Greatest fixed points *}
+section {* Greatest fixed points *}
theory Gfp
imports Lfp