Book

A top-level grouping, common in civil-law codes.

Code
book
Full identifier (IRI)
https://schema.govfresh.com/v1/codlevel/book
Part of
Codification level
JSON file
/v1/codelists/codification-level.json
Profile
code

A document only ever uses the short code above (book). The full identifier is just its complete, globally unique form, so any system reading it knows exactly which term is meant.