F1 Set Auto Machine CoordinateThe 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 CoordinateThe 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 CoordinateThe absolute coordinate set up and enter the cursor it in its coordinate system at present, and set up an axle once.

F5 Auto CenterLook for the work piece centre to make in order to process the starting point.