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    Variable ALL_LAYERSConst

    ALL_LAYERS: LayerMask = 0xffffffff

    Every layer, defined or not — Camera.layers' default (§47) and the render list's.

    A camera with this mask sees every node whatever layer it is on, which is why a scene that never mentions layers behaves exactly as it did before they existed: the filter is (node.layers & ALL_LAYERS) !== 0, and node.layers is never zero unless an author zeroed it.