Definition av copyleft

• The philosophy of using copyrights to enforce freedom of information, especially software source code
• A software license that follows this philosophy
• To license under a copyleft license

Exempel

• They believe in copyleft because they want their software to be used freely by anyone.
• I have placed my program under copyleft.
• The GNU General Public License is a copyleft licence.
• Linus Torvalds copylefted the Linux kernel.

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