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diff --git a/helm/ocaml/tex_cic_textual_parser/texCicTextualLexer.mll b/helm/ocaml/tex_cic_textual_parser/texCicTextualLexer.mll
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+(* 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/.
+ *)
+
+{
+ open TexCicTextualParser;;
+ module L = Lexing;;
+ module U = UriManager;;
+
+ let indtyuri_of_uri uri =
+  let index_sharp =  String.index uri '#' in
+  let index_num = index_sharp + 3 in
+   try
+    (UriManager.uri_of_string (String.sub uri 0 index_sharp),
+     int_of_string(String.sub uri index_num (String.length uri - index_num)) - 1
+    )
+   with
+    Failure msg ->
+     raise (CicTextualParser0.LexerFailure "Not an inductive URI")
+ ;;
+
+ let indconuri_of_uri uri =
+  let index_sharp =  String.index uri '#' in
+  let index_div = String.rindex uri '/' in
+  let index_con = index_div + 1 in
+   try
+    (UriManager.uri_of_string (String.sub uri 0 index_sharp),
+     int_of_string
+      (String.sub uri (index_sharp + 3) (index_div - index_sharp - 3)) - 1,
+     int_of_string
+      (String.sub uri index_con (String.length uri - index_con))
+    )
+   with
+    Failure msg ->
+     raise (CicTextualParser0.LexerFailure "Not a constructor URI")
+ ;;
+
+ (* TeX unquoting for "_" *)
+ let unquote str =
+  Str.global_replace (Str.regexp "\\\\_") "_" str
+ ;;
+}
+let dollar = '$'
+let num = ['1'-'9']['0'-'9']* | '0'
+let letter = ['A'-'Z' 'a'-'z']
+let alfa = letter | ['_' ''' '-'] | "\\_"
+let ident = letter (alfa | num)*
+let baseuri = '/'(ident '/')* ident '.'
+let conuri = baseuri "con"
+let varuri = baseuri "var"
+let indtyuri = baseuri "ind#1/" num
+let indconuri = baseuri "ind#1/" num "/" num
+let blanks = [' ' '\t' '\n' '~' '{' '}'] | "\\;" | "\\rm"
+rule token =
+ parse
+    blanks      { token lexbuf } (* skip blanks *)
+  | "\\Case"    { CASE }
+  | "\\Fix"     { FIX }
+  | "\\CoFix"   { COFIX }
+  | "\\Set"     { SET }
+  | "\\Prop"    { PROP }
+  | "\\Type"    { TYPE }
+  | ident       { ID (unquote (L.lexeme lexbuf)) }
+  | conuri      { CONURI
+                   (U.uri_of_string ("cic:" ^ (unquote (L.lexeme lexbuf)))) }
+  | varuri      { VARURI
+                   (U.uri_of_string ("cic:" ^ (unquote (L.lexeme lexbuf)))) }
+  | indtyuri    { INDTYURI
+                   (indtyuri_of_uri ("cic:" ^ (unquote (L.lexeme lexbuf)))) }
+  | indconuri   { INDCONURI
+                   (indconuri_of_uri("cic:" ^ (unquote (L.lexeme lexbuf)))) }
+  | num         { NUM (int_of_string (L.lexeme lexbuf)) }
+  | '?' num     { let lexeme = L.lexeme lexbuf in
+                   META
+                    (int_of_string
+                     (String.sub lexeme 1 (String.length lexeme - 1))) }
+  | ":>"        { CAST }
+  | ":="        { LETIN }
+  | '?'         { IMPLICIT }
+  | '('         { LPAREN }
+  | ')'         { RPAREN }
+  | "\\["         { LBRACKET }
+  | "\\]"         { RBRACKET }
+  | "\\{"       { LCURLY }
+  | "\\}"       { RCURLY }
+  | ';'         { SEMICOLON }
+  | "\\lambda"  { LAMBDA }
+  | "\\pi"      { PROD }
+  | "\\forall"  { PROD }
+  | ':'         { COLON }
+  | '.'         { DOT }
+  | "\\to"      { ARROW }
+  | '_'         { NONE }
+  | dollar      { DOLLAR }
+  | eof         { EOF }
+  (* Arithmetical operators *)
+  | '+'         { PLUS }
+  | '-'         { MINUS }
+  | '*'         { TIMES }
+  | '='         { EQ }
+{}