[detaro]

FSF recommends CC0 for small code snippets in documentation:

https://www.gnu.org/licenses/license-recommendations.html#do...

[rectang]

Thanks! Here are a couple more resources on the subject:

https://creativecommons.org/weblog/entry/27081

http://labs.creativecommons.org/2011/05/28/fsf-recommends-cc...