COPYING

                   Carnegie Mellon University and                      
                   Alan W Black and Kevin A. Lenzo                     
                      Copyright (c) 1998-2020                          
                        All Rights Reserved.                           
                                                                       
  Permission is hereby granted, free of charge, to use and distribute  
  this software and its documentation without restriction, including   
  without limitation the rights to use, copy, modify, merge, publish,  
  distribute, sublicense, and/or sell copies of this work, and to      
  permit persons to whom this work is furnished to do so, subject to   
  the following conditions:                                            
   1. The code must retain the above copyright notice, this list of    
      conditions and the following disclaimer.                         
   2. Any modifications must be clearly marked as such.                
   3. Original authors' names are not deleted.                         
   4. The authors' names are not used to endorse or promote products   
      derived from this software without specific prior written        
      permission.                                                      
                                                                       
  CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK         
  DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING      
  ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT   
  SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE      
  FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES    
  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN   
  AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,          
  ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF       
  THIS SOFTWARE.