PTW, the Pseudo-Triangulation Workbench, and related tools
                         by Lutz Kettner
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Copyright (c) 2001, The University of North Carolina at Chapel Hill 

All rights reserved.  No part of this software may be sold or
distributed in any form or by any means without the prior written
permission of the Department of Computer Science, University of North
Carolina at Chapel Hill.  Distribution and use of this software is
subject to the Software License Agreement set forth below. By having,
retaining or using a copy of this software, you agree to be subject to
the terms of the Software License Agreement.


Software License Agreement

Permission is given to copy PTW, and its files ("the Software") and to
use them locally, as long as foregoing Copyright Notice is not removed
and the Software name is retained unaltered.  By opening, possessing,
retaining, using, or having a copy of the Software, you are deemed to
have agreed to the terms of this Software License Agreement.

The Software is provided strictly on an "as is" basis without warranty
of any kind.  Neither the University of North Carolina at Chapel Hill,
its faculty, staff or students, nor anyone else who has been involved
in the creation, production or delivery of the Software shall be
liable for any direct, indirect, consequential or incidental damages
arising out of the use or inability to use the Software even if such
entities or persons may be advised of the possibility of such damages.

No part of this software may be sold or distributed in any form or by
any means without the prior written permission of the Department of
Computer Science, University of North Carolina at Chapel Hill.  Your
use of the Software is limited to non-commercial, not-for-profit uses
and activities.  To secure permission to make any other use of the
Software, you should contact the person named below.


Contact person:

    Prof. Jack Snoeyink, University of North Carolina at Chapel Hill
    email: snoeyink@cs.unc.edu
    phone: (919) 962-1969
    fax:   (919) 962-1799