Before contributing to, distributing or otherwise using the content of this wiki, you should be prepared to agree to the terms of our acceptable use policy. This policy has been adapted from that of Wikipedia (for a full version see http://en.wikipedia.org/wiki/Wikipedia:Copyrights#Contributors.27_rights_and_obligations

Contributors

If you contribute material to the Wiki, you thereby license it to the public under the GNU Free Ddocumentation Licence (GFDL): http://en.wikipedia.org/wiki/GNU_Free_Documentation_License. In order to contribute, you therefore must be in a position to grant this license, which means that either

• you own the copyright to the material, for instance because you produced it yourself, or
• you acquired the material from a source that allows the licensing under GFDL, for instance because the material is in the public domain or is itself published under GFDL.

In the first case, you retain copyright to your materials. You can later republish and relicense them in any way you like. However, you can never retract the GFDL license for the versions you placed here: that material will remain under GFDL forever.

In the second case, if you incorporate external GFDL materials, as a requirement of the GFDL, you need to acknowledge the authorship and provide a link back to the network location of the original copy.

Using copyrighted work from others

All works are copyrighted unless they either fall into the public domain or their copyright is explicitly disclaimed. If you use part of a copyrighted work under "fair use", or if you obtain special permission to use a copyrighted work from the copyright holder, you must make a note of that fact (along with names and dates). Advice on obtaining copyright permissions can be found here: ######

Never use materials that infringe the copyrights of others. This could create legal liabilities and seriously damage the project. If in doubt, write it yourself.

Note that copyright law governs the creative expression of ideas, not the ideas or information themselves. Therefore, it is legal to read an article or other work, reformulate the concepts in your own words, and submit it to the Wiki. Obviously the original should be cited as a reference. (Simply add it to the references page that follows each section).

Reusers' rights and obligations

If you want to use Wiki materials in your own books/articles/web sites or other publications, you can do so, but you have to follow the GNU Free Ddocumentation Licence (GFDL). If you are simply duplicating the Wiki content, you must follow section two of the GFDL on verbatim copying.

If you create a derivative version by changing or adding content, this entails the following:

• your materials in turn have to be licensed under GFDL,
• you must acknowledge the authorship of the article (section 4B), and
• you must provide access to the "transparent copy" of the material (eg by providing a conspicuous direct link back to the article hosted on the appropriate website.