• this notice of copyright and distribution policy remain intact
• the distribution is made without charge above and beyond any reasonable fee to cover costs in making and delivering the copy, and
• no additional restrictions are imposed, either as to distribution or as to use.

Please contact the authors for permission to incorporate the program or a work derived from it into a commercial product for sale, lease, rent etc.

Please advise the authors of any modifications or improvements in order that they may be considered for incorporation in a future release. Modified versions should be clearly distinguished from the original before being distributed.