7. _Credits._ This paragraph contains, when available, the names of persons associated with the production of the film in the capacity of producers, directors, writers, narrators, commentators, creators of animation, composers, music directors and other persons responsible for the music, photographers or cameramen for travelogs and other pictures of similar type, and film editors. In a few instances other credits have been included. In the case of each person, a term indicative of the contribution precedes the name. For films in color, the name of the process is given, if available, at the end of the credits statement. 8. _Cast._ The principal actors are named in the order of their billing if the information has been printed previously in an issue of the _Catalog of Copyright Entries_. 9. _Copyright claimant, date, and registration number._ This paragraph begins with the copyright symbol ©. The symbol is followed by: a. The name of the claimant as it is given in the application. b. The date of the beginning of the term of copyright: for published works, the date of publication as cited in the application; for unpublished works, the date or dates of receipt in the Copyright Office of the title, description, and required prints. c. The registration number, preceded by the respective class symbol (L, motion picture photoplays; M, motion pictures other than photoplays) and, also, immediately after the class symbol, the letter P to designate a published work or U, an unpublished work. In the case of motion pictures produced as serials, information relating to the entire serial precedes that relating to the individual numbers or episodes in the serial. More than one entry of a serial is made whenever the descriptive information varies for different parts of the serial. Individual issues of a serial are listed in numerical sequence or by date; in those cases where the name or form of name of the claimant has changed, the issues claimed under a specific name are listed below it. The copyright symbol © always appears immediately before the name of the copyright claimant and the copyright date whenever they are in separate statements. When duplicate numbers appear in a sequence of issues, arrangement of the duplicates is by copyright date. Omission of an item in a sequence does not necessarily mean that the item has not been registered in the Copyright Office, since it may be included in the catalog under its specific title. Index