Metadata Definition
A Metadata Definition is the definition document for a vocabulary term that is neither a class nor a label: predicates (sd:title, sdg:hasLabel, sdg:hookKind, …) and named individuals used as enum values (sdg:PostCommit, sdg:Interval, …).
Identity rule
Like every vocabulary document, the Document id is the term IRI: the definition for sd:title lives at /ontology/sparqdown/title. Resolving any term used in a document leads to its definition by plain IRI lookup.
Kind selection
- Classes (used after
a) → Type Definition - Labels → Label Definition
- Everything else — predicates and enum individuals → Metadata Definition
Typical body
One paragraph of intent; domain/range or value-set notes in prose; sdg:tooltipSummary for hover cards. Constraints, when formalised, hang behind sdg:hasConstraint.