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Appendix
libpng versions 0.5, May 1995, through 0.88, January 1996, are Copyright © 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” 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 18, 2008
[zlib]
This software is based in part on zlib see http://www.zlib.net for information.
[FreeType]
The FreeType Project is Copyright © 1996-2000 by David Turner, Robert Wilhelm, and Werner Lemberg. All rights
reserved except as specified below. THE FREETYPE PROJECT IS PROVIDED “AS IS” WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL ANY OF THE AUTHORS
OR COPYRIGHT HOLDERS BE LIABLE FOR ANY DAMAGES CAUSED BY THE USE OR THE INABILITY TO USE,
OF THE FREETYPE PROJECT.
[GIFLIB]
The GIFLIB distribution is Copyright © 1997 Eric S. Raymond
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
PRO151FD.book Page 150 Wednesday, April 2, 2008 10:19 AM