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diff --git a/tactics/tacinterp.mli b/tactics/tacinterp.mli
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+(***********************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team    *)
+(* <O___,, *        INRIA-Rocquencourt  &  LRI-CNRS-Orsay              *)
+(*   \VV/  *************************************************************)
+(*    //   *      This file is distributed under the terms of the      *)
+(*         *       GNU Lesser General Public License Version 2.1       *)
+(***********************************************************************)
+
+(*i $Id$ i*)
+
+(*i*)
+open Dyn
+open Pp
+open Names
+open Proof_type
+open Tacmach
+open Tactic_debug
+open Term
+open Tacexpr
+open Genarg
+(*i*)
+
+(* Values for interpretation *)
+type value =
+  | VClosure of interp_sign * raw_tactic_expr
+  | VTactic of tactic  (* For mixed ML/Ltac tactics (e.g. Tauto) *)
+  | VFTactic of value list * (value list->tactic)
+  | VRTactic of (goal list sigma * validation)
+  | VContext of interp_sign * direction_flag
+      * (pattern_ast,raw_tactic_expr) match_rule list
+  | VFun of (identifier * value) list * identifier option list *raw_tactic_expr
+  | VVoid
+  | VInteger of int
+  | VIdentifier of identifier
+  | VConstr of constr
+  | VConstr_context of constr
+  | VRec of value ref
+
+(* Signature for interpretation: val\_interp and interpretation functions *)
+and interp_sign =
+  { evc : Evd.evar_map;
+    env : Environ.env;
+    lfun : (identifier * value) list;
+    lmatch : (int * constr) list;
+    goalopt : goal sigma option;
+    debug : debug_info }
+
+(* Gives the identifier corresponding to an Identifier [tactic_arg] *)
+val id_of_Identifier : value -> identifier
+
+(* Gives the constr corresponding to a Constr [value] *)
+val constr_of_VConstr : value -> constr
+
+(* Transforms an id into a constr if possible *)
+val constr_of_id : interp_sign -> identifier -> constr
+
+(* To embed several objects in Coqast.t *)
+val tacticIn : (interp_sign -> raw_tactic_expr) -> raw_tactic_expr
+val tacticOut : raw_tactic_expr -> (interp_sign -> raw_tactic_expr)
+val valueIn : value -> raw_tactic_arg
+val valueOut: raw_tactic_arg -> value
+val constrIn : constr -> Coqast.t
+val constrOut : Coqast.t -> constr
+val loc : Coqast.loc
+
+(* Sets the debugger mode *)
+val set_debug : debug_info -> unit
+
+(* Gives the state of debug *)
+val get_debug : unit -> debug_info
+
+(* Adds a definition for tactics in the table *)
+val add_tacdef : (identifier Util.located * raw_tactic_expr) list -> unit
+
+(* Adds an interpretation function for extra generic arguments *)
+val add_genarg_interp :
+  string ->
+    (interp_sign -> raw_generic_argument -> closed_generic_argument) -> unit
+
+val genarg_interp :
+  interp_sign -> raw_generic_argument -> closed_generic_argument
+
+(* Interprets any expression *)
+val val_interp : interp_sign -> raw_tactic_expr -> value
+
+(*
+(* Interprets tactic arguments *)
+val interp_tacarg : interp_sign -> raw_tactic_expr -> value
+*)
+
+(* Interprets redexp arguments *)
+val interp_redexp : Environ.env -> Evd.evar_map -> raw_red_expr
+  -> Tacred.red_expr
+
+(* Interprets tactic expressions *)
+val tac_interp : (identifier * value) list -> (int * constr) list ->
+                 debug_info -> raw_tactic_expr -> tactic
+
+(* Interprets constr expressions *)
+val constr_interp : interp_sign -> constr_ast -> constr
+
+(* Initial call for interpretation *)
+val interp : raw_tactic_expr -> tactic
+
+(* Hides interpretation for pretty-print *)
+val hide_interp : raw_tactic_expr -> tactic
+
+(* Adds an interpretation function *)
+val interp_add : string * (interp_sign -> Coqast.t -> value) -> unit
+
+(* Adds a possible existing interpretation function *)
+val overwriting_interp_add : string * (interp_sign -> Coqast.t -> value) ->
+                             unit
+
+