Copyright protects the form of expression of ideas but not the ideas themselves. It covers original literary, artistic, dramatic, musical, and other works. The creator of a work owns the copyright unless there is a written agreement stating otherwise. Copyright gives the owner economic rights such as reproduction and distribution rights, and moral rights of attribution and integrity. Exceptions to copyright protection include ideas, names, short phrases, and works not fixed in a tangible form. Fair use and fair dealing provisions allow limited use without permission for purposes such as teaching. Copyright lasts for the life of the author plus 50 years.