--- a/src/HOL/List.thy Mon Jul 19 15:24:35 1999 +0200
+++ b/src/HOL/List.thy Mon Jul 19 15:27:34 1999 +0200
@@ -6,7 +6,7 @@
The datatype of finite lists.
*)
-List = Datatype + WF_Rel +
+List = Datatype + WF_Rel + NatBin +
datatype 'a list = "[]" ("[]") | "#" 'a ('a list) (infixr 65)