F3:     DIR
        dir/p

F4:     DIR A
        dir/p a: 

F5:     CHECK DISK 
	chkdsk 

F6:	CLEAR SCREEN
	cls

F7:	DRIVE A
	a:

F8:     DRIVE C
        c:

F9:     DRIVE D
        d:

F10:    DISKCOPY
        diskcopy
F1:	FORMAT A (720 kb)
	format a: /f:720

F2:     FORMAT A (1.44 Mb)
	format a:
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