Configures system devices.

Printer port:      MODE LPTn[:] [COLS=c] [LINES=l] [RETRY=r]
Serial port:       MODE COMm[:] [BAUD=b] [PARITY=p] [DATA=d] [STOP=s] [RETRY=r]
Device Status:     MODE [device] [/STATUS]
Redirect printing: MODE LPTn[:]=COMm[:]
Prepare code page: MODE device CP PREPARE=((yyy[...]) [drive:][path]filename)
Select code page:  MODE device CP SELECT=yyy
Refresh code page: MODE device CP REFRESH
Code page status:  MODE device CP [/STATUS]
Display mode:      MODE [display-adapter][,n]
                   MODE CON[:] [COLS=c] [LINES=n]
Typematic rate:    MODE CON[:] [RATE=r DELAY=d]