Hierarchy classification:

1. top of the aat hierarchies
2. Physical Attributes Facet
3. Attributes and Properties (hierarchy name)
4. [attributes and properties by specific type]
5. operational attributes

Anotations

Scope note:

Use to describe two-way systems involving feedback from a viewer or user, to obtain data or commands and to give immediate results or updated information. Generally used to describe computer-based systems, but may have broader applications as well.