DDJ-FLX4: Purpose of the 'Knob Center Position Adjustment' feature?

Just discovered the 1.06 firmware update for my 'FLX4 and that went fine. I downloaded the Guidelines PDF for this Utilities Mode feature (https://www.pioneerdj.com/-/media/pioneerdj/downloads/firmwares/controllers/ddj-flx4/knobcenterpositionadjustmentguidelinese.pdf) and that does seem to work, but—what is its purpose? When would I want/need to do this? Its purpose is very nonintuitive. Thanks for any pointers.