A copy of a node under a new id, its settings read back through its type's
spec, as a saved cube's are (the review of the demo, 2026-10-13: copy,
paste and duplicate): a source keeps the columns it was typed with. A node
of a type Cube doesn't know can't be copied: undefined.
A copy of a node under a new id, its settings read back through its type's spec, as a saved cube's are (the review of the demo, 2026-10-13: copy, paste and duplicate): a source keeps the columns it was typed with. A node of a type Cube doesn't know can't be copied:
undefined.