# 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/.