OptionalidOptionalenabledOptionallockedEditor-only: the object is locked against viewport picking (Ctrl+L). The runtime ignores this.
OptionalgroupedEditor-only: the object is a selection group — clicking a child in the viewport selects this object (Ctrl+G). The runtime ignores this.
OptionalpositionOptionalrotationQuaternion [x, y, z, w]; omit for identity.
OptionalscaleOptionalcomponentsOptionalchildrenOptionalassemblyWhen set, this object is an assembly instance: its components/children are
not authored inline but materialized from the referenced assembly plus the
link's override delta. components/children are omitted on
such a node. See AssemblyLink and TODO/assembly-system.md.
Persistent object id. Normally omitted — scenes mint fresh ids at load — but the editor writes it for objects referenced by a SignalConnectionDoc so those references survive save / load.