R319 - modelint/flatland-model-diagram-editor GitHub Wiki

R319 / 1:1c

Frame Metadata appears in zero or one Open Field

Open 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 an Open Field. (If not, it must be rendered in a Boxed Field).

An Open 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.