## Physical Device Driver Reference

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### MOU_SETSCALEFACTORS (53h) - Remarks

This function reassigns the current pointing device scaling factors. Scaling factors are ratio values that determine how much relative movement is necessary before the physical Mouse device driver reports a mouse event. These ratios specify the number of mickeys per 8 pels. The default ratio values are:

        Vertical/Row ratio      - 16 mickeys per 8 pels
        Horizontal/Column ratio -  8 mickeys per 8 pels