src/HOL/HOLCF/IOA/NTP/Impl.thy

--- a/src/HOL/HOLCF/IOA/NTP/Impl.thy	Sat Jan 08 00:28:31 2011 +0100
+++ b/src/HOL/HOLCF/IOA/NTP/Impl.thy	Sat Jan 08 09:30:52 2011 -0800
@@ -8,7 +8,7 @@
 imports Sender Receiver Abschannel
 begin
 
-types 'm impl_state
+type_synonym 'm impl_state
   = "'m sender_state * 'm receiver_state * 'm packet multiset * bool multiset"
   (*  sender_state   *  receiver_state   *    srch_state      * rsch_state *)