--- a/src/HOL/Extraction.thy Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/Extraction.thy Sun Nov 02 18:21:45 2014 +0100
@@ -2,7 +2,7 @@
Author: Stefan Berghofer, TU Muenchen
*)
-header {* Program extraction for HOL *}
+section {* Program extraction for HOL *}
theory Extraction
imports Option