Copyright is the inalienable, 31legally secured right to publish, reproduce, and sell the matter and form of literary, musical, dramatic, or artistic work. Copyright is designed  32specifically to protect an artist, publisher, or other owner against any 33unauthorised  copying of his works – as by reproducing the work in any material form, publishing it, performing it in public, filming it, broadcasting it, causing it to be distributed to 34subscribers  or making any 35adaptation of the work. A copyright supplies a copyright holder with a kind of 36ownership over the created material. 37Historically, copyrights grew out of the same system as royal patent grants, by which certain authors and printers were given the 38exclusive right to publish books and other materials. The 39basic purpose of such grants was not to protect authors’ or publishers’ rights but to raise government revenue and to give governing authorities control over 40publicised  materials.