Mike -
@RichCournoyer has indulged me here to confirm v4.08 jogging:
Arrow keys: Left = +X. Right = -X. Up = +Y, Down = -Y
Comma and Period (Or as I see it, Less than Arrow and Greater than Arrow) = -Z, +Z
Unfortunately the wireless 10-key everyone has purchased has no comma, and likewise the jogging speed (1-5) was also deprecated. Since v4.08 only supports the C3D probe (without additional fuss using offsets), jogging and touching-off your mill is kinda important.