--- a/src/HOL/Finite_Set.thy Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/Finite_Set.thy Sun Nov 02 18:21:45 2014 +0100
@@ -3,7 +3,7 @@
with contributions by Jeremy Avigad and Andrei Popescu
*)
-header {* Finite sets *}
+section {* Finite sets *}
theory Finite_Set
imports Product_Type Sum_Type Nat