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The license Wikispecies uses grants free access to our content in the same sense that free software is licensed freely. This principle is known as copyleft. Wikispecies content can be copied, modified, and redistributed so long as the new version grants the same freedoms to others and acknowledges the authors of the Wikispecies article used (a direct link back to the article is generally thought to satisfy the attribution requirement). Wikispecies articles therefore will remain free under the GFDL and can be used by anybody subject to certain restrictions, most of which aim to ensure that freedom.
To this end,
- Permission is granted to copy, distribute and/or modify Wikispecies' text under the terms of the Creative Commons Attribution-ShareAlike 3.0 Unported License and, unless otherwise noted, the GNU Free Documentation License, unversioned, with no invariant sections, front-cover texts, or back-cover texts.
- A copy of the Creative Commons Attribution-ShareAlike 3.0 Unported License is included in the section entitled "Wikispecies:Text of Creative Commons Attribution-ShareAlike 3.0 Unported License"
- A copy of the GNU Free Documentation License is included in the section entitled "GNU Free Documentation License".
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The English text of the CC-BY-SA and GFDL licenses is the only legally binding restriction between authors and users of Wikispecies content. What follows is our interpretation of CC-BY-SA and GFDL, as it pertains to the rights and obligations of users and contributors.