Overview
Copyleft is a legal approach that grants freedoms over copyrighted works, requiring the same rights be preserved in derivative works, ensuring the use, modification, and redistribution of the work. This technique is widely used in software licenses, such as the [[gnu-general-public-license|GNU General Public License]], to maintain copyright conditions. Copyleft has been applied to various fields, including computer software, documents, art, and scientific discoveries, with notable examples like [[linux|Linux]] and [[wordpress|WordPress]].