operation manual

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 libpng-0.88,
with the following individuals added to the list of
Contributing Authors:
John Bowler
Kevin Bracey
Sam Bushell
Magnus Holmgren
Greg Roelofs
Tom Tanner
libpng versions 0.5, May 1995, through 0.88, January
1996, are
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42,
Inc.
For the purposes of this copyright and license,
"Contributing Authors"
is defined as the following set of individuals:
Andreas Dilger
Dave Martindale
Guy Eric Schalnat
Paul Schmidt
Tim Wegner
The PNG Reference Library is supplied "AS IS". The
Contributing Authors
and Group 42, Inc. disclaim all warranties, expressed or
implied,
including, without limitation, the warranties of
merchantability and of
fitness for any purpose. The Contributing Authors and
Group 42, Inc.
assume no liability for direct, indirect, incidental, special,
exemplary,
or consequential damages, which may result from the
use of the PNG
Reference Library, even if advised of the possibility of
such damage.
Permission is hereby granted to use, copy, modify, and
distribute this
source code, or portions hereof, for any purpose, without
fee, subject
to the following restrictions:
1. The origin of this source code 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 Contributing Authors and Group 42, Inc. specifically
permit, without
fee, and encourage the use of this source code as a
component to
supporting the PNG file 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.jpg" and "pngbar.jpg (88x31) and
"pngnow.png.jpg" (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 software is based in part on the work of the
FreeType Team.
----------------------
The FreeType Project LICENSE
----------------------------
2006-Jan-27
Copyright 1996-2002, 2006 by
David Turner, Robert Wilhelm, and Werner Lemberg
107