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+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
+(*   \VV/  **************************************************************)
+(*    //   *      This file is distributed under the terms of the       *)
+(*         *       GNU Lesser General Public License Version 2.1        *)
+(************************************************************************)
+
+(* Certification of Imperative Programs / Jean-Christophe Filliātre *)
+
+(* $Id: ProgramsExtraction.v,v 1.1.2.1 2004/07/16 19:30:16 herbelin Exp $ *)
+
+Require Export Extraction.
+
+Extract Inductive unit => unit [ "()" ].
+Extract Inductive bool => bool [ true false ].
+Extract Inductive sumbool => bool [ true false ].
+
+Require Export Correctness.
+
+Declare ML Module "pextract".
+
+Grammar vernac vernac : ast :=
+  imperative_ocaml [ "Write" "Caml" "File" stringarg($file) 
+    "[" ne_identarg_list($idl) "]" "." ]
+     -> [ (IMPERATIVEEXTRACTION $file (VERNACARGLIST ($LIST $idl))) ]
+
+| initialize [ "Initialize" identarg($id) "with" comarg($c) "." ]
+     -> [ (INITIALIZE $id $c) ]
+.