517 Categories of Films Note (Archival) (VM) [obsolete]:

Field 517 was made obsolete in 1985. The first indicator was defined as Specifies whether fiction or nonfiction (0 = Nonfiction, 1 = Fiction). The second indicator position was undefined. The subfield codes were: $a (Different formats), $b (Content descriptors), $c (Additional animation techniques). Genre information may be contained in field 655 (Index Term - Genre/Form) .