How everything is organised, widest to narrowest. Each level contains the next.
The same library, three ways — all structural (the stable catalog of what exists). Structure views read down the ladder; the lens view (gold) lays across it. Each opens in the Collection and links back here.
Separate from the library structure above. These show state (what is wired / how it is doing right now), which changes over time — not the stable catalog of what exists. Linked here for convenience, clearly labeled as status, not library structure.