Copyleft

---

Copyleft distinguished from copyright, is the practice of offering people the right to freely distribute copies and modified versions of a work with the stipulation that the same rights be preserved in derivative works created later.

• the freedom to use the work
• the freedom to study the work
• the freedom to copy and share the work with others
• the freedom to modify the work, and the freedom to distribute modified and therefore derivative works

A Copyleft approach provides building blocks and a starting point, with the right to copy and modify solutions, and in the process excluding no one. – Dr. Lakshmi Murthy