src/Pure/Isar/keyword.scala
changeset 40459 913e545d9a9b
parent 40456 e91b3c2145b4
child 45666 d83797ef0d2d
--- a/src/Pure/Isar/keyword.scala	Wed Nov 10 15:43:06 2010 +0100
+++ b/src/Pure/Isar/keyword.scala	Wed Nov 10 15:47:56 2010 +0100
@@ -42,7 +42,6 @@
   val minor = Set(MINOR)
   val control = Set(CONTROL)
   val diag = Set(DIAG)
-  val heading = Set(THY_HEADING, PRF_HEADING)
   val theory =
     Set(THY_BEGIN, THY_SWITCH, THY_END, THY_HEADING, THY_DECL, THY_SCRIPT,
       THY_GOAL, THY_SCHEMATIC_GOAL)