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From the Manual: Axe Fx II
Program Change Reset
Normally, the last value of an external control source is retained—even across preset changes—until a new value is received. So if you “park” a pedal-controlled Wah, for example, then change to a new preset with the same Wah settings, the newly loaded preset will load with the Wah in the same parked position.
Program Change Reset (PC RST) allows you to override this behavior, causing a parameter to use a previously stored setting when it loads, rather than referring to the retained source value. As soon as the external controller is updated—the pedal moved, a new MIDI message received—the attached parameter snaps back to track it again.
Here’s how it works: the parameter box above a modified knob always shows the “manual” value so you can freely set it to save it. (Knob and filter “graph” parameters with modifiers are animated as their sources change, so you
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