Worldwide Trams Wiki:Copyrights

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GNU Free Documentation License
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The GFDL is a "copyleft" license, meaning the 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 Wikia page. Wikia content will, therefore, will remain free forever and can be used by anybody subject to certain restrictions, most of which serve to ensure that freedom.

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Image guidelines
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