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diff --git a/helm/software/lambda-delta/src/automath/autParser.mly b/helm/software/lambda-delta/src/automath/autParser.mly
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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/.
+ */
+
+%{
+   module O = Options
+   module A = Aut
+
+   let _ = Parsing.set_trace !O.debug_parser
+%}
+   %token <int> NUM
+   %token <string> IDENT
+   %token EOF MINUS PLUS TIMES AT FS CN CM SC QT TD OP CP OB CB OA CA
+   %token TYPE PROP DEF EB E PN EXIT
+    
+   %start entry
+   %type <Aut.command option> entry   
+%%
+   path: MINUS {} | FS {} ;
+   oftype: CN {} | CM {} ;
+   star: TIMES {} | AT {} ;
+   sc: E {} | SC {} | CN {} ;
+   eof: SC {} | EOF {} ;
+
+   expand:
+      |    { true  }
+      | TD { false }
+   ;
+   local:
+      |      { false }
+      | path { true  }
+   ;
+
+   idents:
+      | IDENT             { [$1]     }
+      | IDENT path idents { $1 :: $3 }
+   ;
+   qid:
+      | IDENT                    { ($1, true, [])  }
+      | IDENT QT QT              { ($1, true, [])  }
+      | IDENT QT local idents QT { ($1, $3, $4)    }
+   ;
+   term:
+      | TYPE                         { A.Sort true         }
+      | PROP                         { A.Sort false        }
+      | qid                          { A.GRef ($1, [])     }
+      | qid OP CP                    { A.GRef ($1, [])     }
+      | qid OP terms CP              { A.GRef ($1, $3)     } 
+      | OA term CA term              { A.Appl ($2, $4)     }
+      | OB IDENT oftype term CB term { A.Abst ($2, $4, $6) } 
+   ;
+   terms:
+      | term          { [$1]     }
+      | term CM terms { $1 :: $3 }
+   ;
+   
+   start:
+      | PLUS {} | MINUS {} | EXIT {} | eof {}
+      | star {} | IDENT {} | OB {} 
+   ; 
+   entity:
+      | PLUS IDENT                    { A.Section (Some (true, $2))  }
+      | PLUS TIMES IDENT              { A.Section (Some (false, $3)) }
+      | MINUS IDENT                   { A.Section None               }
+      | EXIT                          { A.Section None               }
+      | star                          { A.Context None               }
+      | qid star                      { A.Context (Some $1)          }
+      | IDENT DEF EB sc term          { A.Block ($1, $5)             }
+      | IDENT sc term DEF EB          { A.Block ($1, $3)             }
+      | OB IDENT oftype term CB       { A.Block ($2, $4)             }
+      | IDENT DEF PN sc term          { A.Decl ($1, $5)              }
+      | IDENT sc term DEF PN          { A.Decl ($1, $3)              }
+      | IDENT DEF expand term sc term { A.Def ($1, $6, $3, $4)       }
+      | IDENT sc term DEF expand term { A.Def ($1, $3, $5, $6)       }
+   ;
+   entry:
+      | entity start { Some $1 }
+      | eof          { None    }
+   ;