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        <portname>:=<baud-rate>,<parity>,<word-length>,<stop-bits>
              [[,p]]

  Purpose: Specifies an available output port.

           The <portname> keyname must be the name of an
           output port as it is recognized by MS-DOS. This
           keyname can be COMx: (communications port, where
           x represents the port number), LPTx: (a parallel
           port, where x represents the port number), EPT:
           (used for a specific IBM printer), LPTx.OS2 (a
           parallel port used with OS/2, where x represents
           the port number), FILE:, or a filename.

           For COM ports, the <baud-rate> value specifies
           the port's baud rate; the <word-length> value
           gives the length of a word (in bits); the
           <stop-bits> value gives the number of stop bits
           to be used; and the [[,p]] option specifies that
           hardware handshaking is in effect.

           LPT (parallel), EPT, FILE, and LPTx.OS2 ports do
           not take any parameters.

           The LPTx.OS2 ports are used (instead of the
           corresponding LPT port) when you are running
           Windows in the DOS compatibility box of OS/2.
           This port bypasses the Windows' special output
           handling.

           Specifying a filename for the <portname> will
           direct output to that file. A filename, unlike
           the other port names, must not be followed by a
           colon (:).

           By using FILE:=, Windows will prompt you to
           specify an output file at output time.

           You can specify no more than 10 ports.

  To change COM port settings: Choose the Ports icon from
           the Control Panel window.
  To change or add other ports: Use Notepad to edit the
           WIN.INI file.