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Creative Commons provides the open licenses used by the vast majority of open content, including over 880M items according to a recent report.
The breadth and depth of license options available through Creative Commons licenses provides any creator with a wide range of opportunities to license any type of work with a human readable license, a “legalese” version of the same license, as well as a machine readable version of the license. While fixing overaggressive copyright is the best solution, Creative Commons provides authors and creators with a relatively simple way to share their work in the current legal context.
All CC licenses carry the attribution term “BY.” From there the creator can select from an array of other options which include the following:
GNU Free Documentation License (2014) https://edtechbooks.org/-JLH