src/HOL/Main.thy
changeset 13403 bc2b32ee62fd
parent 13367 ad307f0d80db
child 13755 a9bb54a3cfb7
--- a/src/HOL/Main.thy	Sun Jul 21 15:37:04 2002 +0200
+++ b/src/HOL/Main.thy	Sun Jul 21 15:42:30 2002 +0200
@@ -6,7 +6,7 @@
 
 header {* Main HOL *}
 
-theory Main = Map + Hilbert_Choice:
+theory Main = Map + Hilbert_Choice + Extraction:
 
 text {*
   Theory @{text Main} includes everything.  Note that theory @{text