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Creative Commons License
This textual work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. More licensing info here.

Introduction * » Licensing *

Licensing information

The textual content, HTML source code and video clips, except for third-party (e.g. Google) advertisement material, are licensed under a Creative Commons Attribution-Noncommercial-Share Alike 2.5 License. In short, it means that they may be used and modified for any non-commercial purpose, as long as the original source is attributed as described below and the derived material is published under this same license.

The images used on these pages, on the other hand, are licensed under the GFDL (GNU Free Documentation License) (version 1.2 or newer), unless their captions contain an abbreviation CC (the Creative Commons license defined above), PD (Public Domain) or © (copyright), which define alternative licenses.

GFDL is very similar to the above CC license, but it allows usage for commercial purposes too, as long as it is published under the same GFDL license.


The aforementioned CC license requires that further distributions and derivatives must be done under the same license and that the original source must be mentioned. In this case it is sufficient to mark "" as the original source. This may change, though, so it is a good idea to see the latest information on this page when attributing.