Copyright is a form of protection granted by law to authors of original creative works. It gives the author exclusive rights over reproduction, distribution, public performance, public display, and creation of derivative works. Copyright protection applies automatically when a work is created and fixed in a tangible form. It covers both published and unpublished works including literary, dramatic, musical, artistic works. Not all creative works are subject to copyright protection which does not extend to facts, ideas, or systems. Copyright's purpose is to promote innovation and creativity by providing incentives for creators while allowing limited use of copyrighted works under exceptions like fair use.