--- a/src/HOL/HOLCF/Ssum.thy Sun Nov 02 17:14:15 2014 +0100
+++ b/src/HOL/HOLCF/Ssum.thy Sun Nov 02 17:16:01 2014 +0100
@@ -3,7 +3,7 @@
Author: Brian Huffman
*)
-header {* The type of strict sums *}
+section {* The type of strict sums *}
theory Ssum
imports Tr