ZyXEL Communications ZYWALL USG 20 Manual page 922

Appendix E Open Software Announcements
This copy of the libpng notices is provided for your convenience. In case of any
discrepancy between this copy and the notices in the file png.h that is included in
the libpng distribution, the latter shall prevail.
COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices immediately following this
sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.4.1, February 25, 2010, are
Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are distributed
according to the same disclaimer and license as libpng-1.2.5 with the following
individual added to the list of Contributing Authors
Cosmin Truta
libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are distributed according to
the same disclaimer and license as libpng-1.0.6 with the following individuals
added to the list of Contributing Authors
Simon-Pierre Cadieux
Eric S. Raymond
Gilles Vollant
and with the following additions to the disclaimer:
There is no warranty against interference with your enjoyment of the library or
against infringement. There is no warranty that our efforts or the library will
fulfill any of your particular purposes or needs. This library is provided with all
faults, and the entire risk of satisfactory quality, performance, accuracy, and
effort is with the user.
libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are Copyright
(c) 1998, 1999 Glenn Randers-Pehrson, and are distributed according to the same
disclaimer and license as libpng-0.96, with the following individuals added to the
list of Contributing Authors:
Tom Lane
Glenn Randers-Pehrson
Willem van Schaik
libpng versions 0.89, June 1996, through 0.96, May 1997, are Copyright (c) 1996,
1997 Andreas Dilger Distributed according to the same disclaimer and license as
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ZyWALL USG 20/20W User's Guide