Scene-graph path — the key setLayer() takes.
Display window [min, max] in data units.
Authored data bounds the window is clamped into.
Active colormap name, or null for direct colour.
Volumetric absorption κ (meaningful in volumetric blending only).
Explicit compositing order, or null when inherited/automatic.
OptionalgainLive linear gain — present on type === 'sound' layers only.
One row of the Layers panel as the embedder API reports it: the per-layer appearance knobs a remote controller may read and (via LayerPatch) write. Structural / diagnostic fields of the panel's own
LayerInfoare deliberately left out; this is the stable subset.