src/HOL/MicroJava/J/Eval.thy

--- a/src/HOL/MicroJava/J/Eval.thy	Wed Oct 07 19:45:00 2015 +0200
+++ b/src/HOL/MicroJava/J/Eval.thy	Wed Oct 07 23:28:49 2015 +0200
@@ -3,7 +3,7 @@
     Copyright   1999 Technische Universitaet Muenchen
 *)
 
-section {* Operational Evaluation (big step) Semantics *}
+section \<open>Operational Evaluation (big step) Semantics\<close>
 
 theory Eval imports State WellType begin