Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. coating (material)
7. [coating by form]
8. ink
9. [ink by composition or origin]

Anotations

Scope note:

Liquid blacking, ink, or any like substance, such as octopus ink. Specifically refers to black coloring in ancient Rome. The Romans distinguished three principal types of atramentum: librarium, sutorium, and tectorium.