F1 Set Auto Machine Coordinate:The mechanical coordinate set up and enter the cursor it in its coordinate system at present, and set up an axle once.
F2 Set Auto Relative Coordinate:The relative coordinate set up and enter the cursor it in its coordinate system at present, and set up an axle once.
F3 Set Auto Auxiliary Coordinate:The absolute coordinate set up and enter the cursor it in its coordinate system at present, and set up an axle once.
F5 Auto Center:Look for the work piece centre to make in order to process the starting point.