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 subject]
9. case files

Anotations

Scope note:

Collections of files in which each file is related to one particular project, including but not limited to an engineering or architectural project. The term is also used to refer to electronic files related to a project.