   F1 = Dash spacing down
        use if "is" = "5"
   F2 = Dash spacing up
        use if "s" = "eee"
   F3 = Letter spacing down
        use if words run together
   F4 = Letter spacing up
        use if spaces in words
   F5 = Xmit speed decrease 1 wpm
  aF5 = Xmit speed decrease 5 wpm
   F6 = Xmit speed increase 1 wpm
  aF6 = Xmit speed increase 5 wpm
   F7 = Clear Rx window
   F8 = Clear Tx window
   F9 = Toggle digital filter
  F10 = Reset parameters
  Esc = Toggle between Xmit & Rcve
Alt-B = Toggle monitor tone on/off
Alt-F = Farnsworth spacing
Alt-H = Help - this screen
Alt-I = Send from a file
Alt-L = Lock Tx speed to Rx
Alt-M = Display messages/call/QTH
Alt-N = Initialize "Number"
Alt-O = Put rcvd data to file
Alt-P = Put rcvd data to printer
Alt-Q = Exit program
Alt-R = Generate random code groups
Alt-S = Show program status
Alt-T = Change monitor tone
Alt-U = Swap receive (user) params
   Up = Send call
 Down = Send QTH
     = Send "Number"
     = Increment "Number"
  Ins = Send AS
 Home = Send KN
 PgUp = Send AR
 PgDn = Send SK
  End = Send SN
  Del = Send BK & enter Rx mode
 <cr> = Send BT
    ! = Send AA
    # = Send KA
    $ = Send IQ
    % = Send AK
