20 years on, these licenses are pretty robust. The flaws in earlier versions have been discovered and repaired in subsequent revisions. They have been adapted to multiple countries' legal systems, allowing CC users to mix-and-match works from many territories - animating Polish sprites to tell a story by a Canadian, set to music from the UK.
Willingham could clarify his "public domain" dedication by applying a Creative Commons license to *Fables*, but which license?
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