Keys Used in SetTime:

     Enter/Return:      If setting Date, advance to Time set. Otherwise, set
                        the new date and time.
     .                  Advances to next field (e.g.: from hour to minute)
     /                  Advances to next field in date set line
     :                  Advances to next filed in time set line
     Esc/Undo           Abort without setting date or time
     Tab/Up/Down        Toggle between date and time set fields
     Left/Backsp        Cursor left
     Right              Cursor right
     Keypad -           Selects "am" (when cursor is there, of course)
     Keypad +           Selects "pm"
     
When this program is run it first attempts to read the keyboard time. If this
does not produce a valid time, then the time/date stamp of the file in the
current disk drive (the one the program is running from, in the AUTO folder,
if one exists) is read. Only if this fails is the system time read.

On a Mega or any other machine that sets the system time without setting the
the keyboard time, this means that the time/date stamp of the file will be
used if found, even though the system time is more accurate. (Maybe Megas
DO set the keyboard time? Don't remember...)
