Version at: 19/01/2019, 22:33
# How to contribute under CC0
When contributing to Tatoeba, your sentences are by default redistributed under CC-BY. There is however also the possibility to contribute under CC0.
Because this feature is still new, you will need permission to access it.
* Contact [Trang](https://tatoeba.org/eng/private_messages/write/TRANG) via private message.
* Simply write "CC0" for the title of the message.
* Explain shortly why you prefer to use CC0 instead of CC-BY. This is mostly to ensure that you have a basic understanding of these licenses and are not just making a random decision.
Once you are granted permission, you will see new elements on the website.
* On the page to add new sentences, you will see a dropdown to choose the license.
* On the sentence's page, you will see also see a dropdown to switch the license of your sentences.
* Finally, you will be able to access a page to switch the license of all your sentences (for sentences that are eligible).
version at: 20/01/2019, 00:04
# How to contribute under CC0
When contributing to Tatoeba, your sentences are by default redistributed under CC-BY. There is however also the possibility to contribute under CC0.
Because this feature is still new, you will need permission to access it.
* Contact [Trang](https://tatoeba.org/eng/private_messages/write/TRANG) via private message.
* Simply write "CC0" for the title of the message.
* Explain shortly why you prefer to use CC0 instead of CC-BY. This is mostly to ensure that you have a basic understanding of these licenses and are not just making a random decision.
Once you are granted permission, you will see new elements on the website.
* On the page to add new sentences, you will see a dropdown to choose the license.
* On the sentence's page, you will see also see a dropdown to switch the license of your sentences.
* Finally, you will be able to access a page to switch the license of all your sentences (for sentences that are eligible).
**Important to know**
The CC0 license is currently usable only on sentences that you have created yourself. It cannot be applied on translations.
Translations are considered as derivative work and their license is restricted by the license of the original sentence.
While it should be logically possible to use CC0 for a translation of a CC0 sentence, we have not yet implemented in Tatoeba this possibility.
Note
The lines in green are the lines that have been added in the new version.
The lines in red are those that have been removed.
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