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diff --git a/plugins/cc/ccproof.mli b/plugins/cc/ccproof.mli
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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        *)
+(************************************************************************)
+
+(* $Id$ *)
+
+open Ccalgo
+open Names
+open Term
+
+type rule=
+    Ax of constr
+  | SymAx of constr
+  | Refl of term
+  | Trans of proof*proof
+  | Congr of proof*proof
+  | Inject of proof*constructor*int*int
+and proof =
+    private {p_lhs:term;p_rhs:term;p_rule:rule}
+
+val build_proof :
+  forest ->
+  [ `Discr of int * pa_constructor * int * pa_constructor
+  | `Prove of int * int ] -> proof
+
+
+