This project contains sample code for subclassing NSImageRep
"PNG transparency demonstration 1" by POV-Ray source code - Own work: Rendered in POV-Ray by user:ed_g2s.. Licensed under CC BY-SA 3.0 via Commons - https://commons.wikimedia.org/wiki/File:PNG_transparency_demonstration_1.png#/media/File:PNG_transparency_demonstration_1.png
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