src/HOL/Library/Old_Datatype.thy

--- a/src/HOL/Library/Old_Datatype.thy	Sun Nov 02 17:16:01 2014 +0100
+++ b/src/HOL/Library/Old_Datatype.thy	Sun Nov 02 17:20:45 2014 +0100
@@ -3,7 +3,7 @@
     Author:     Stefan Berghofer and Markus Wenzel, TU Muenchen
 *)
 
-header {* Old Datatype package: constructing datatypes from Cartesian Products and Disjoint Sums *}
+section {* Old Datatype package: constructing datatypes from Cartesian Products and Disjoint Sums *}
 
 theory Old_Datatype
 imports "../Main"