URL details: www.gnu.org/copyleft/copyleft.html
URL title:
What is Copyleft? - GNU Project - Free Software Foundation
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2023-01-07
copyleft
2022-06-19
僐僺乕儗僼僩
2022-06-19
copylefted software
2022-05-12
Copyleft
2022-04-25
copylefted