The MDI key interface assignment is not fixed so the machine tool builder can incorporate only the keys necessary for the machine. Or, the MDI keys can be incorporated into the machine operator's panel to improve the operability of the machine.

The machine tool builder can create unique menus using the graphic clisplay functions and soft keys used for selecting menus. The machine tool builder can also extend the control functions by using many other functions, such as control for creating and editing machining programs, reader/punch interface control, and reading and writing PMC data.

PMC programs and macro executor programs are stored in flash memory chips built into the CNC control part. Programs can be written into flash memory chips on the board using a memory card, which is used with personal computer. The time required for writing programs into flash memory chips is also substantially shorter than  that for conventional EPROMs. These improvements allow the machine tool builder to write programs much faster than ever before.