Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Visual Works (hierarchy name)
5. visual works (works)
6. [visual works by function]
7. studies (visual works)
8. preparatory studies

Anotations

Scope note:

Preparatory studies of pictorial or design details. For minute parts of a larger structure, object, or image, use "details." For drawings of architectural construction or design details, use "detail drawings."