src/HOL/Datatype_Examples/Derivation_Trees/Parallel.thy
changeset 58889 5b7a9633cfa8
parent 58309 a09ec6daaa19
child 63167 0909deb8059b
--- a/src/HOL/Datatype_Examples/Derivation_Trees/Parallel.thy	Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/Datatype_Examples/Derivation_Trees/Parallel.thy	Sun Nov 02 18:21:45 2014 +0100
@@ -5,7 +5,7 @@
 Parallel composition.
 *)
 
-header {* Parallel Composition *}
+section {* Parallel Composition *}
 
 theory Parallel
 imports DTree