--- /dev/null
+(* Copyright (C) 2000, 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/.
+ *)
+
+(******************************************************************************)
+(* *)
+(* PROJECT HELM *)
+(* *)
+(* A tactic to print Coq objects in XML *)
+(* *)
+(* Claudio Sacerdoti Coen <sacerdot@cs.unibo.it> *)
+(* 18/10/2000 *)
+(* *)
+(* This module defines a pretty-printer and the stream of commands to the pp *)
+(* *)
+(******************************************************************************)
+
+(* Tokens for XML cdata, empty elements and not-empty elements *)
+(* Usage: *)
+(* Str cdata *)
+(* Empty (prefix, element_name, *)
+(* [prefix1, attrname1, value1 ; ... ; prefixn, attrnamen, valuen] *)
+(* NEmpty (prefix, element_name, *)
+(* [prefix1, attrname1, value1 ; ... ; prefixn, attrnamen, valuen], *)
+(* content *)
+type token =
+ Str of string
+ | Empty of string option * string * (string option * string * string) list
+ | NEmpty of string option * string * (string option * string * string) list *
+ token Stream.t
+;;
+
+(* currified versions of the token constructors make the code more readable *)
+val xml_empty :
+ ?prefix:string -> string -> (string option * string * string) list ->
+ token Stream.t
+val xml_nempty :
+ ?prefix:string -> string -> (string option * string * string) list ->
+ token Stream.t -> token Stream.t
+val xml_cdata : string -> token Stream.t
+
+(* The pretty printer for streams of token *)
+(* Usage: *)
+(* pp tokens None pretty prints the output on stdout *)
+(* pp tokens (Some filename) pretty prints the output on the file filename
+* @param gzip if set to true files are gzipped. Defaults to false *)
+val pp : ?gzip:bool -> token Stream.t -> string option -> unit
+val pp_to_outchan : token Stream.t -> out_channel -> unit
+val pp_to_string : token Stream.t -> string
+
+val add_xml_declaration: token Stream.t -> token Stream.t
+
+val strip_xml_headings: string -> string
+