This model provides for a number of obligations of the assignor, including the obligation to assist the assignee in practical and legal matters related to the works and rights transferred. This assignment of copyright provides for the assignment of copyright (and other intellectual property rights if desired) in one or more works. The terms of such assignment are broad enough to cover most types of works protected by copyright, including artistic, literary and musical works. The works in which the transferred rights exist are referenced in the document and can appear in an empty calendar, thus avoiding the need to modify the main part of the agreement in a complex and cumbersome way. .