Assertion: copyleft license | /r/CapableOf | protect derivative works
Facets:
value: effectively
type: MANNER
value: from losing the original permissions
type: TRANSITIVE-OBJECT
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.