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Copyright (c) 1998-2001 Greg Roelofs. All rights reserved.

This software is provided "as is," without warranty of any kind,

express or implied. In no event shall the author or contributors

be held liable for any damages arising in any way from the use of

this software.

Permission is granted to anyone to use this software for any purpose,

including commercial applications, and to alter it and redistribute

it freely, subject to the following restrictions:

1. Redistributions of source code must retain the above copyright

notice, disclaimer, and this list of conditions.

2. Redistributions in binary form must reproduce the above copyright

notice, disclaimer, and this list of conditions in the documenta-

tion and/or other materials provided with the distribution.

3. All advertising materials mentioning features or use of this

software must display the following acknowledgment:

This product includes software developed by Greg Roelofs

and contributors for the book, "PNG: The Definitive Guide,"

published by O'Reilly and Associates.

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