Assertion: license's work | /r/HasProperty | derivative
Facets:
Source sentences:
text: Copyleft licenses also include a key addition provision that must be followed in order to copy or modify the software, that requires the user to provide source code for the work and to distribute their modifications under the same license (or sometimes a compatible one); thus effectively protecting derivative works from losing the original permissions and being used in proprietary programs.
text: If the work you are licensing is a derivative of another work, then in addition to following best practices above, you need to let your potential users know a few things:
text: The license must allow for reproductions, modifications and derivative works and permit their distribution under the terms of the original work.
text: This license is not compatible with most other licenses (beside permissive licenses) in that it requires derivative works to be licensed under the Open Content License (Viral license).