This is used to great effect with the Alchemy software synthesizer's "Detail" knob, allowing you to edit sounds with surgical precision or to make broad strokes

This is used to great effect with the Alchemy software synthesizer's "Detail" knob, allowing you to edit sounds with surgical precision or to make broad strokes. Hand-editing additive sounds is almost impossible without it. Alchemy in general is a jaw dropping piece of kit. It would give the UX types here a seizure though...