A versatile toolholder system is provided that is used by a numerically controlled machine tool. The navigation device includes road information, etc. The front-end counter represents an unadjusted system time. A switch box control panel simulates the controls and indicators of aircraft. A single hydraulically actuated shifting tool is usable to open the frac gates and close the casing flapper valves. The roles of the yellow and cyan pixels are exchanged in respective sets of two rows.