Discussions on Play

I think plays should have something like 'Subjects'

An example is "Alma" which is based on a famous Austrian woman Alma Mahler-Werfel and would could have as a subjects:

Biography, Alma Mahler-Werfel, Sanitorium ?

Plays should probably be co-typed as written works to get the subject property. Actually, I had originally intended to refactor them into written work when we refactored the publishing domain, but I seem to have omitted it.

The type "Written Work" has a property "Subjects", so I'd suggest that "Written Work" be added as an Included Type of "Play". I'm surprised it isn't already.