<para>
  This option causes GPSBabel to use the given baud rate for serial
  communications.  It must match the given baud rate on the receiver.  The
  default value matches the default on the receiver, 4800.
</para>
<para>
  Valid options are 1200, 2400, 4800, 9600, 19200, 57600, and 115200.
</para>
