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. devices (symbols)

Anotations

Scope note:

Devices that are specifically symbol- or picture based, designed for ready recognition to identify a product, company, or organization and sometimes used as trademarks. For those graphic images similarly used but more word- or letter-based, see "logotypes." For devices in any form that specifically identify a person or object as belonging to a group or organization, sometimes denoting rank or office, see "insignia."