R317 - modelint/flatland-model-diagram-editor GitHub Wiki

R317 / 1:1c

Frame Metadata appears in zero or one Boxed Field

Boxed Field shows exactly one Frame Metadata

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A unit of Metadata that is designated for display within a Frame might be rendered in a Box Field. (If not, it must be rendered in an Open Field).

A Boxed Field must be assigned a Metadata item, but that item may not have any content supplied, in which case the field will appear blank when rendered.