OptionalColumnsOptional ordered per-column headers and display formats when Shape is 'Table'.
OptionalFormatOptional display formatting rules for numbers, currencies, percentages, or dates.
Unique binding key (e.g., 'kpi.revenue.mtd') referenced by Beat.DataRefs and compositions.
OptionalLabelHuman-readable metric label for charts, callouts, and data tabs.
Structural shape of the resolved dataset.
Authoritative query, view, artifact, or inline source definition.
Named binding connecting an on-screen number or chart to an authoritative data source (§10.1).