Copyright © 1990-2001 by George Williams 

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

  Redistributions of source code must retain the above copyright
  notice, this list of conditions and the following disclaimer. 

  Redistributions in binary form must reproduce the above copyright
  notice, this list of conditions and the following disclaimer in 
  the documentation and/or other materials provided with the 
  distribution. 

  The name of the author may not be used to endorse or promote 
  products derived from this software without specific prior 
  written permission. 


THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY 
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
POSSIBILITY OF SUCH DAMAGE. 
