Copyleft is a specific license granted under copyright law, and the international statutes governing copyright law are the mechanisms that establish and protect copyleft.
Copyleft is a form of licensing, and can be used to maintain copyright conditions for works ranging from computer software, to documents, to art, to scientific discoveries and instruments in medicine. In general, copyright law is used by an author to prohibit recipients from reproducing, adapting, or distributing copies of their work.
Copyleft, 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. Copyleft software licenses are considered protective or reciprocal, as contrasted with permissive free-software licenses.
Under copyleft, an author must give every person who receives a copy of the work permission to reproduce, adapt, or distribute it, with the accompanying requirement that any resulting copies or adaptations are also bound by the same licensing terms.
Copyleft itself probably began in the work of MIT computer expert Richard Stallman. In 1983, Stallman started an open-source programming project called GNU (a reflexive acronym for “GNU’s Not Unix”) and created the first general public license to govern the use of GNU, keeping it and its derivatives open and freely available. Many consider the concept of copyleft to be a return to the earliest ideas of intellectual property, which treat ideas and their specific forms as a common heritage. Given that intellectual creations build on what has come before and shape what comes next, copyleft is seen as a bridging mechanism to encourage the growth of social knowledge and common good.
Here at BEST GURU INFO we give everybody permission and the right to copy and redistribute anything on our website. If you can use it — COPY IT. It would be super nice if you give us credit for the material that you copy, i.e. “FROM BESTGURU.INFO” after all, that is what the internet is all about — sharing ideas and information. Enjoy!