Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Information Forms (hierarchy name)
5. information forms (objects)
6. document genres
7. [documents by function]
8. [identifying markings and symbols]
9. marks (identifying markings)
10. [marks by function]

Anotations

Scope note:

Marks for printmaking, usually taking the form of right angles, crosses, or crosses within circles, put on printing plates to perfectly register them for color printing; also placed on mechanicals with overlays to ensure accurate registration.