AD envelopeΒΆ
AD env is an envelope generator with attack and decay phase.

attack sets the time it takes to reach the peak.
decay sets the time it takes to fall back to 0.
amount sets the modulation depth.
trig opens the trigger settings menu. When triggered the envelope (re)starts.
range sets the range/polarity of the LFO: positive, negative, pos+neg or random.
Note
The envelope always starts at 0 and ends at 0. Depending on range the envelope peaks at +1 (positive), -1 (negative), randomly at either +1 or -1 (pos+neg) or at random values between -1 and 1 (random).