User manual - V-N500取扱説明書(2014年05月07日)

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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
May 15, 2007