diff -r 88b815dca68d -r a7b156c404e2 src/Pure/ProofGeneral/pgip.ML
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Pure/ProofGeneral/pgip.ML	Mon Dec 04 20:40:11 2006 +0100
@@ -0,0 +1,22 @@
+(*  Title:      Pure/ProofGeneral/pgip.ML
+    ID:         $Id$
+    Author:     David Aspinall
+
+Prover-side PGIP abstraction.  
+Not too closely tied to Isabelle, to help with reuse/porting.
+*)
+
+signature PGIP =
+sig
+    include PGIPTYPES
+    include PGIPINPUT
+    include PGIPOUTPUT			    
+end
+
+structure Pgip : PGIP = 
+struct
+   open PgipTypes
+   open PgipInput
+   open PgipOutput
+end
+