#
# Copyright 1994 The University of Newcastle upon Tyne
# 
# Permission to use, copy, modify and distribute this software and its
# documentation for any purpose other than its commercial exploitation
# is hereby granted without fee, provided that the above copyright
# notice appear in all copies and that both that copyright notice and
# this permission notice appear in supporting documentation, and that
# the name of The University of Newcastle upon Tyne not be used in
# advertising or publicity pertaining to distribution of the software
# without specific, written prior permission. The University of
# Newcastle upon Tyne makes no representations about the suitability of
# this software for any purpose. It is provided "as is" without express
# or implied warranty.
# 
# THE UNIVERSITY OF NEWCASTLE UPON TYNE DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE UNIVERSITY OF
# NEWCASTLE UPON TYNE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
# USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.
#
# If you wish to use this program commercially please contact the
# author and this can be arranged with minimal hassle.
#
# 
# Author:   Lindsay Marshall
#          (lindsay.marshall@newcastle.ac.uk)
#
#          Department of Computing Science
#          University of Newcastle upon Tyne, UK
#

