--- a/src/HOL/IOA/Solve.thy Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/IOA/Solve.thy Sun Nov 02 18:21:45 2014 +0100
@@ -3,7 +3,7 @@
Copyright 1994 TU Muenchen
*)
-header {* Weak possibilities mapping (abstraction) *}
+section {* Weak possibilities mapping (abstraction) *}
theory Solve
imports IOA