Recently there was a question on OCLC-CAT about the use of --Juvenile drama. The answer was found in SCM H 2230:
a. Fiction films. Assign the following headings, as appropriate, to individual fiction films:
· Topical headings with the subdivision –Drama (or, in the case of juvenile fiction films, the subdivision –Juvenile films).
and H 1690:
5. Juvenile films and sound recordings.
a. General. Use the subdivisions –Juvenile films and –Juvenile sound recordings for either fictional or factual treatment of a topic. For fictional films, use Children's films as an additional heading.
There is also H 1780 and that point I got really confused. Why --Juvenile films and not --Juvenile drama? Why would --Drama and --Juvenile drama mean different things, other than intellectual level? Why would any subject heading/subdivision cover fiction and nonfiction?