ZyXEL Communications ZYWALL USG 20 Manual page 924

Appendix E Open Software Announcements
format in commercial products. If you use this source code in a product,
acknowledgment is not required but would be appreciated.
A "png_get_copyright" function is available, for convenient use in "about" boxes
and the like:
printf("%s",png_get_copyright(NULL));
Also, the PNG logo (in PNG format, of course) is supplied in the files "pngbar.png"
and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
Libpng is OSI Certified Open Source Software. OSI Certified Open Source is a
certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
February 25, 2010
This Product includes libmd5-rfc software under the Zlib/libpng License
Copyright (c) <year> <copyright holders>
This software is provided 'as-is', without any express or implied warranty. In no
event will the authors be held liable for any damages arising 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. The origin of this software must not be misrepresented; you must not claim
that you wrote the original software. If you use this software in a product, an
acknowledgment in the product documentation would be appreciated but is not
required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
This Product includes pcmcia-cs software under the MPL License
Mozilla Public License Version 1.1
1. Definitions.
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ZyWALL USG 20/20W User's Guide