"Paint-By-Number" is one of many names for a type of graphical logic puzzle originating in Japan. Other common names for these puzzles are Nonograms, Griddlers, Hanjie, and Picross.
In surveying these, Jan Wolter noticed a lack of a good, standardized file format for paint-by-number puzzles. Every program seems to invent it's own file format. So he decided to come up with an XML file format that would be rich enough to handle most puzzle-storing applications.
We all understand perfectly well that XML is not very fun, so I decided to come up with a YAML-based file format that stylish, trendy and youthful. Bazinga!
MIT License
Copyright (c) 2021 Alexey Popov
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