[TYPO3-doc] License for official TYPO3 documentation, extensions and other stuff

[Michael]

Hi,

As far as I know, all official TYPO3 documentation is licensed under 
the OpenContent License [1][2] (please correct me if I am wrong). In 
this regard, I have a few questions :-)

(1) I wonder, if there are any specific reasons for using this license, 
maybe an executive decision at one point?

(2) *must* all official TYPO3 documentation use the OPL or can (for 
example) one of the Creative Commons Licenses [3] be used?

(3) as an extension developer, can I choose to use a different license 
than OPL and publish my manual at the TER? I understand that all 
extensions published at the TER must be GPL, but what's about their 
manuals? Or are manuals automatically included in this license (as the 
"package" of an extension)?

(4) if someone wants to contribute to the TYPO3 project, e.g. podcasts, 
videos, presentations, etc. (so, no PHP code and no documentation via 
the Documentation Team), any recommendations/suggestions/policies which 
license to use, so it does not clash with any of the TYPO3 Association's 
rules?


The statements at the official TYPO3 website [4] do not cover 
"non-technical" stuff such as documentation from my perspective.


Thanks for any feedback.
Cheers, Michael


[1] http://opencontent.org/opl.shtml
[2] http://en.wikipedia.org/wiki/Open_Content_License
[3] http://creativecommons.org/licenses/
[4] https://typo3.org/about/licenses/