Opmerking over licenties: Please note that the GPL is for software and its derivatives and the GFDL is for text documentations or other forms of text and their derivatives. This means that the interface design of Wikipedia and all other portions of the MediaWiki software are licensed under the GPL, but the actual contents of Wikipedia are licensed under the GFDL.
As such, portions of this screenshot may be licensed under two separate licenses. The GPL and GFDL are not the same license; they are only connected through the Free Software Foundation, the creator of the licenses.
Screenshot This is a screenshot of a Wikimedia Foundation project, contents are licensed under CC BY-SA 3.0 and GFDL Licenses, and the MediaWiki software is licensed under GPL License.