H.21. POW

Copyright (c) 2001, 2002, Peter Shannon                     
All rights reserved.                                             

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 contributors may be used to endorse or promote
      products derived from this software without specific prior  
      written permission.                                              
                                                                        
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"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 REGENTS
OR CONTRIBUTORS 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.