This is the suite of Creative Commons Licences, done as source code.
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The guide is at
The guide is at
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'https: wiki.creativecommons.org/images/d/d1/Building_the_4.0_Suite.pdf'>wiki.creativecommons.org/images/d/d1/Building_the_4.0_Suite.pdf. BY-NC-SA is the base, the others are diffs.