Pitch Feedback (Chorus And Flange Only); Trigger Flange (Flange Only); Pitch Detune (Detune Only) - Alesis GT Reference Manual

Pitch Feedback (Chorus and Flange only)

The display says:
Pitch feedback sends some of the output signal back to the input, from
00% to 99%. Higher numbers give a sharper, more resonant sound.

Trigger Flange (Flange only)

The display says:
When on, a silence between incoming notes resets the flanger to its
highest point, and as soon as a new note appears, the flanger sweeps
downward. If you continue to holding a sustaining note, the flanger will
sweep according to the LFO parameters.
Trigger flange works best with notes having a percussive attack.

Pitch Detune (Detune only)

The display says:
This sets the amount of detuning in cents from -99 to +99 (+ is sharp, - is
flat).
PITCH FEEDBACK:
0 0%
TRIGGER FLANGE:
O FF
DETUNE AMOUNT:
- 1 5
51