Copyright © 1990-2001 by George Williams <br />
<br />
Redistribution and use in source and binary forms, with or without <br />
modification, are permitted provided that the following conditions <br />
are met: <br />
<br />
  Redistributions of source code must retain the above copyright<br />
  notice, this list of conditions and the following disclaimer. <br />
<br />
  Redistributions in binary form must reproduce the above copyright<br />
  notice, this list of conditions and the following disclaimer in <br />
  the documentation and/or other materials provided with the <br />
  distribution. <br />
<br />
  The name of the author may not be used to endorse or promote <br />
  products derived from this software without specific prior <br />
  written permission. <br />
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<br />
THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY <br />
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED<br />
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS <br />
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <br />
THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, <br />
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, <br />
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR <br />
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS <br />
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF <br />
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT <br />
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT <br />
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE <br />
POSSIBILITY OF SUCH DAMAGE. <br />