FlipFlop modulation?

[Burkuagh]

Is there a way to make keystroke-triggered flipflop modulation? For example... the ability to have it pan the opposite direction each time a key is hit.

[Howard]

ModMapper (Zebra) / mapping generator (ACE)

[bmrzycki]

Modmapper, Alternate mode, step count 2. Set each step to opposite + and - values.

[pdxindy]

Modmapper, Alternate mode, step count 2. Set each step to opposite + and - values.

and of course you can do things like flip flip flop flop and so on...