Copyright 1991 Chih-Hung Hsieh

All rights reserved.

Permission to use, copy, modify, and distribute this program
for any purpose and without fee is hereby granted, provided
that the above copy right notice and this permission notice
appear in all copies, and that the name of the author not be 
used in advertising or publicity pertaining to this document 
without specific, written prior permission.  The author make
no representations about the suitability of this document for
any purpose.  It is provided ``as is'' without expressed or
implied warranty.
