  iCn3D incorporates the DelPhi code to dynamically show the
  electrostatic potential map. The DelPhi code is licensed by Columbia
  University, which does not permit commercial use without contacting the
  DelPhi project for permission.
  
  The remaining code is a "United States Government Work" and is provided
  by the terms described below:
  
                            PUBLIC DOMAIN NOTICE
               National Center for Biotechnology Information
  
  This software/database is a "United States Government Work" under the
  terms of the United States Copyright Act.  It was written as part of
  the author's official duties as a United States Government employee and
  thus cannot be copyrighted.  This software/database is freely available
  to the public for use. The National Library of Medicine and the U.S.
  Government have not placed any restriction on its use or reproduction.
  
  Although all reasonable efforts have been taken to ensure the accuracy
  and reliability of the software and data, the NLM and the U.S.
  Government do not and cannot warrant the performance or results that
  may be obtained by using this software or data. The NLM and the U.S.
  Government disclaim all warranties, express or implied, including
  warranties of performance, merchantability or fitness for any particular
  purpose.
  
  Please cite the author in any work or product based on this material.
  