Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Object Groupings and Systems (hierarchy name)
4. object groupings
5. [object groupings by specific context]
6. information artifact groupings
7. files (document groupings)
8. [files by function]
9. authority files

Anotations

Scope note:

Electronic or physical files or other groupings of authorized cataloging entries for names, particularly personal and corporate names, but the term could also be used for authorities containing other names, such as geographic names, titles of works of art, etc.