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Examples
ampeg_vel2sustain=30
pitcheg_vel2sustain=10
Sustain level will be calculated as
sustain level = (eg type)_sustain + (eg type)_vel2sustain
ampeg_vel2sustain=30
pitcheg_vel2sustain=10
Sustain level will be calculated as
sustain level = (eg type)_sustain + (eg type)_vel2sustain