GNU Free Documentation License

The GNU Free Documentation License (GNU FDL or simply GFDL) is a copyleft license for free content, designed by the Free Software Foundation (FSF) for the GNU project. It is the open content counterpart to the GNU GPL. The current state of the license is version 1.2, the official text of which can be found at http://www.gnu.org/copyleft/fdl.html.

Using the GFDL

Materials for which commercial redistribution is prohibited

Materials for which commercial redistribution is prohibited generally cannot be used in a GFDL-licensed document, e.g., a Wikipedia article, because the license does not exclude commercial re-use. However in some specific cases, commercial re-uses may be fair use and in that case such materials do not need to be licensed to fall within the GFDL if such fair use is covered by all potential subsequent uses. One good example of such liberal and commercial fair use is parody.

Related Topics:
Wikipedia - Fair use - Parody

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