there is no such functionality - You can only save a preset with controls setup as You want and then load it every time when You want go back to this setup.
Hi i don't mean in presets, i mean so you can reset a knob to it's default value, sometimes it seems very difficult to get a synth knob back to it's exact default value..
Also, i was wondering why in the piano roll of nithonat in FL are there two keys for each sound?