sdd:shapeCopy as claim

sdd:shape is the shape token a sdd:Node renders as — for example rounded, slim, or gauge. It is a style token, not a geometry value: the token itself resolves to concrete drawing rules through the injectable theme system (spec §5, Tier 2), the same resolution mechanism sdd:style uses.Copy as claim

Like the rest of the scene layer, sdd:shape is machine-materialized cache by default: an unmarked value is rewritten freely whenever the diagram recomputes (spec §4.1, §4.2). An author overrides the computed default with the ! operator, which materializes as an sdd:pinned annotation on exactly that quad — "cache unless annotated" is the round-trip invariant (examples decision 2).Copy as claim