Copyright

**Definition:** It is a form of protection provided by law. In the United States this protection is granted to authors of original works of authorship, including literary, dramatic, musical, artistic, and certain other intellectual works. This protection is available to both published and unpublished works. (from Circular of the United States Copyright Office, 6/30/2008)

**Tree numbers:** - I01.880.604.583.458.300 - L01.737.360 - N03.706.535.518.300