Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. information form components
7. gathered matter components
8. [bindings and binding components]
9. binding components

Anotations

Scope note:

Raised ridges across the bound spine of a book indicating the location of the cords beneath the covering material. Distinguished from "cords (binding components)," the twisted strands of fibrous material to which the sections of a book are sewn.