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diff --git a/helm/ocaml/tactics/proofEngineTypes.ml b/helm/ocaml/tactics/proofEngineTypes.ml
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-(* Copyright (C) 2002, HELM Team.
- * 
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- * 
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * 
- * HELM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA  02111-1307, USA.
- * 
- * For details, see the HELM World-Wide-Web page,
- * http://cs.unibo.it/helm/.
- *)
-
-  (**
-    current proof (proof uri * metas * (in)complete proof * term to be prooved)
-  *)
-type proof = UriManager.uri option * Cic.metasenv * Cic.term * Cic.term
-  (** current goal, integer index *)
-type goal = int
-type status = proof * goal
-
-  (**
-    a tactic: make a transition from one status to another one or, usually,
-    raise a "Fail" (@see Fail) exception in case of failure
-  *)
-  (** an unfinished proof with the optional current goal *)
-type tactic = status -> proof * goal list
-
-  (** tactic failure *)
-exception Fail of string
-
-  (** constraint: the returned value will always be constructed by Cic.Name **)
-type mk_fresh_name_type =
- Cic.metasenv -> Cic.context -> Cic.name -> typ:Cic.term -> Cic.name