ConstA knob is a plain display value in GeometriesModuleConfig, at the path its id names. Not
knobs: beforeLayerConfig, layers, the labels' title and
transformFeaturesForDisplay, which take structured, MapLibre or function values, and events.
Setting any lineLabel knob draws the border labels.
Every geometries knob with its kind, description, range or options and, where one value holds everywhere, its default: the module-wide knobs, the fill and border, how a hovered or clicked geometry draws them, then the center and border labels. Static data, readable with no map loaded.