The Visual library is Copyright (c) 2000, 2001, 2002, 2003, 2004,

and 2005 by David Scherer and others. See authors.txt for a

complete list of contributors.

All Rights Reserved

Permission to use, copy, modify, and distribute this software and its

documentation for any purpose and without fee is hereby granted,

provided that the above copyright notice appear in all copies and that

both that copyright notice and this permission notice appear in

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used in advertising or publicity pertaining to distribution of the

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THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

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NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR

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The following copyright notice applies to the Polygon module distributed

with Visual for the convenience of our users under the following terms:

"This distribution contains code from the GPC Library, and/or code

resulting from the use of the GPC Library. This usage has been

authorized by The University of Manchester, on the understanding

that the GPC-related features are used only in the context of this

distribution. It is not permitted to extract the GPC code from the

distribution as the basis for commercial exploitation, unless a

GPC Commercial Use Licence is obtained from The University of

Manchester, contact: http://www.cs.man.ac.uk/~toby/gpc/".

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The following copyright notice applies to the files src/num_util* and

include/num_util* which are distributed with Visual for the convenience of

our users under the following terms:

num_util is Copyright (c) 2003 by Rhys Goldstein, Chris Seymour and

Phil Austin.

Boost Software License - Version 1.0 - August 17th, 2003

Permission is hereby granted, free of charge, to any person or organization

obtaining a copy of the software and accompanying documentation covered by

this license (the "Software") to use, reproduce, display, distribute,

execute, and transmit the Software, and to prepare derivative works of the

Software, and to permit third-parties to whom the Software is furnished to

do so, all subject to the following:

The copyright notices in the Software and this entire statement, including

the above license grant, this restriction and the following disclaimer,

must be included in all copies of the Software, in whole or in part, and

all derivative works of the Software, unless such copies or derivative

works are solely in the form of machine-executable object code generated by

a source language processor.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT

SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE

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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

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