It ensures that computer programs are protected as literary works (Article 4), and that the arrangement and selection of material in databases is protected (Article 5). It provides authors of works with control over their rental and distribution in Articles 6 to 8 which they may not have under the Berne Convention alone. It also prohibits circumvention of technological measures for the protection of works (Article 11) and unauthorized modification of rights management information contained in works (Article 12).