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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/.