libpng
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libpng is the official Portable Network Graphics (PNG) reference library
(originally called pnglib). It is a platform-independent library that contains C
functions for handling PNG images. It supports almost all of PNG's features, is
extensible, and has been widely used and tested for over 23 years. libpng is
dependent on zlib for data compression and decompression routines. [0]

Upstream: http://www.libpng.org/pub/png/libpng.html


[000] Index
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* Installation ........................................................... [001]
* Usage .................................................................. [002]
* References ............................................................. [003]


[001] Installation
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+------------------------------------------------------------------------------+
|                                                                              |
|  $ kiss b libpng                                                             |
|                                                                              |
+------------------------------------------------------------------------------+


[002] Usage
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Refer to the manual pages and command help output.


[003] References
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[0] https://en.wikipedia.org/wiki/Libpng