Licensing

Except where otherwise specified, the text on is licensed under the Creative Commons Attribution-Share Alike License 3.0 (Unported) (CC-BY-SA). The license used by is made clear by the CC-BY-SA button in the footer.
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 * Read the full legal code of the license

Editing
To grow the commons of free knowledge and free culture, all users editing or otherwise contributing to the agree to grant broad permissions to the general public to re-distribute and re-use their contributions freely for any purpose, including commercial use, in accordance with the CC-BY-SA license. Such use is allowed where attribution is given and the same freedom to re-use and re-distribute applies to any derivative works of the contributions.

By editing or otherwise contributing to the you agree to license any text you change or contribute under the CC-BY-SA license.

Importing text
If you want to provide contributions in which you do not own or control the copyright, you may only do so if you originally received such contributions under terms that are compatible with the CC-BY-SA license.

If you import text you must, in a reasonable fashion (including by one of the attribution methods described below), credit the author(s). Where such credit is commonly given through page histories (such as copying within ), it is sufficient to give attribution in the edit summary, which is recorded in the page history, when importing the text.

Attribution
As a contributor, you agree that being attributed in any of the following fashions satisfies the attribution requirements of the license applicable to your contribution to the :
 * 1) attribution through a hyperlink (where possible) or URL to the article or articles you contributed to,
 * 2) attribution through a hyperlink (where possible) or URL to an alternative, stable online copy which is freely accessible, which conforms with CC-BY-SA, and which provides credit to the authors in a manner equivalent to the credit given on the, or
 * 3) attribution through a list of all authors. Any list of authors may be filtered to exclude very small or irrelevant contributions.

Non-text files
Freely licensed or public domain images are strongly preferred on.

Non-text media on should not be assumed to be available under the same license as the text. Please view the media description page for details about the license of any specific media file.

If you are uploading files to, you should cite the source of the file, attribute the authors, and note any copyright information, where applicable.

Using content
It is your responsibility to understand and adhere to the CC-BY-SA license. Text from external sources may attach additional attribution requirements to the work beyond what is described on this page.

When re-using text that has been posted subject to a CC-BY-SA license, you must provide attribution to the authors using the attribution method described above in the section above titled "Attribution".

Attribution example when re-using content on your own website:
 * This article uses material from the Oscillator article on the and is licensed under the Creative Commons Attribution-Share Alike License.

Off-wiki content (for example, emails, forums, etc.) should not be assumed to be released under this license if this is not explicitly stated.