Page:Creative Commons for Educators and Librarians.pdf/63

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The six licenses, from least to most restrictive in terms of the freedoms granted reusers, are shown in figures 3.5a to 3.5f.

The Attribution license, or CC BY (figure 3.5a), allows people to use the work for any purpose (even commercially and even in modified form) as long as they give attribution to the creator.

The Attribution-ShareAlike license, or BY-SA (figure 3.5b), allows people to use the work for any purpose (even commercially and even in modified form), as long as they give attribution to the creator and make any adaptations they share with others available under the same or a compatible license. This is Creative Commons’ version of a copyleft license (a type of open source software license that makes the license permissions viral by design), and is the license required for the content uploaded to Wikipedia, for example.

The Attribution-NonCommercial license, or BY-NC (figure 3.5c), allows people to use the work for noncommercial purposes only, and only as long as they give attribution to the creator.

The Attribution-NonCommercial-ShareAlike license, or BY-NC-SA (figure 3.5d), allows people to use the work for noncommercial purposes only, and only as long as they give attribution to the creator and make any adaptations they share with others available under the same or a compatible license.