Copyright (C) 2001-2004 Cosmin Truta.

This program (OptiPNG) is supplied "AS IS".  The author disclaims
all warranties, expressed or implied, including, without limitation,
the warranties of merchantability, fitness for any purpose, and
non-infringement.  The author assumes no liability for direct,
indirect, incidental, special, exemplary, or consequential damages,
which may result from the use of this program, even if advised of
the possibility of such damages.

Permission is hereby granted to use, copy, modify and distribute this
program, in compiled or source code form, or portions hereof, for any
purpose, without fee, subject to the following restrictions:

1. The origin of this program must not be misrepresented.

2. Altered versions must be plainly marked as such and must not be
   misrepresented as being the original source.

3. This copyright notice may not be removed or altered from any source
   or altered source distribution.

The author specifically permits and encourages the use of this
program as a component to supporting the PNG file format in
commercial products.  If this program is used in such a product,
acknowledgment is not required, but would be appreciated.