src/Pure/ProofGeneral/pgip.ML

type simproc: explicitl dependency of morphism;
added eq_simproc, morph_simproc;
renamed mk_simproc' to make_simproc -- primary interface;

(*  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 PGIPMARKUP
    include PGIPINPUT
    include PGIPOUTPUT
end

structure Pgip : PGIP = 
struct
   open PgipTypes
   open PgipMarkup
   open PgipInput
   open PgipOutput
end