labelWidget label; interactive widgets also use it for ID generation. A ## suffix can distinguish IDs without displaying the suffix.
v_current_minMutable lower value of the edited range in element [0]. Pass Float32Array storage, not a JS scalar; native access uses the supplied backing memory.
v_current_maxMutable upper value of the edited range in element [0]. Pass Float32Array storage, not a JS scalar; native access uses the supplied backing memory.
True if the widget changed the supplied value; false if it remained unchanged.
Edit the lower and upper bounds of a floating-point range with paired drag controls.