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1.3 Flat Mode
Flat mode is designed for the user using middleware to provide advanced modal functionality. In flat mode super slider functionality is enabled. Super slider functionality is the ability of each slider strip to operate simultaneously as both a slider and a set of two or three buttons. There are two types of sliders. S1 and S2 are three button sliders and S3 through S11 are two button sliders.
In addition to the CC message for each slider, note on and note off messages are sent when the user places their finger(s) on or removes it from the slider. The Note number used for this is the same as the CC number for the slider.
see the attached midi specs..