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    Copyright (c) 1992-1998 by Manuel Serrano. All rights reserved.  
                                                                     
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                           ,;'( )__, ) '                             
                          ;;  //   L__.                              
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    This program is distributed in the hope that it will be useful.  
    Use and copying of this software and preparation of derivative   
    works based upon this software are permitted, so long as the     
    following conditions are met:                                    
           o credit to the authors is acknowledged following         
             current academic behaviour                              
           o no fees or compensation are charged for use, copies,    
             or access to this software                              
           o this copyright notice is included intact.               
      This software is made available AS IS, and no warranty is made 
      about the software or its performance.                         
                                                                     
      Bug descriptions, use reports, comments or suggestions are     
      welcome. Send them to                                          
        Manuel Serrano -- Manuel.Serrano@unice.fr                    
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