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  Name:     comset() - set comm ports to different port values
  Usage:    comset(<port1>,<port2>)
  Params:   integer <port1> - the comm port to change (1-4)
            integer <port2> - the new comm port to set <port1> to,
            in the range of (1-4)

  Returns:  nothing

 ---------------------------------- Example ---------------------------------

            * On a machine with 3 comm ports, this example sets com1
            * to be com3:

                 comset(1,3)

            * to reset the com ports back to normal:

                 comreset()

  Note:     The comm ports are not swapped, instead the port address
            of the first parameter specified is changed to be equal
            to the port address of the second parameter specified. No
            checking for the existence of a port is done.