Liftpack: copyright, disclaimer, and credits

Copyright (C) 1995,1996,1997 Gabriel Fernandez, Senthil Periaswamy, Wim Sweldens.
All rights reserved. 

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

    1. Redistributions of source code must retain the above copyright
       notice, this list of conditions, the following disclaimer, and
       the credits.
    2. Redistributions in binary form must reproduce the above
       copyright notice, this list of conditions, the following
       disclaimer, and the credits in the documentation and/or other
       materials provided with the distribution.
    3. All modifications to the source code must be clearly marked as
       such. Binary redistributions based on modified source code must
       be clearly marked as modified versions in the documentation
       and/or other materials provided with the distribution.
    4. No fees may be charged for distribution of the codes, other
       than a fee to cover the cost of the media and a reasonable
       handling fee.
    5. This code, and any derivative of this code, may not be used in
       a commercial package without the prior explicit written
       permission of the authors.

This code is provided "as is", without any warranty of any kind,
either expressed or implied, including but not limited to, any implied
warranty of merchantibility or fitness for any purpose. In no event
will the authors or any party who distributed the code be liable for
damages or for any claim(s) by any other party, including but not
limited to, any lost profits, lost data or data rendered inaccurate,
losses sustained by third parties, or any other special, incidental or
consequential damages arising out of the use or inability to use the
program, even if the possibility of such damages has been advised
against. The entire risk as to the quality, the performance, and the
fitness of the program for any particular purpose lies with the party
using the code.

ANY USE OF THIS CODE CONSTITUTES ACCEPTANCE OF THE TERMS OF THE
COPYRIGHT NOTICE

Credits: This software was written at the Departments of Mathematics
and Computer Science of the University of South Carolina. Most of the
coding was done by Gabriel Fernandez and Senthil Periaswamy under the
direction of Wim Sweldens. Special thanks to Peter Schroeder for many
useful suggestions to improve the performance of the code.