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 CloseComm()            Closes the communication device and frees memory
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   Syntax:              CloseComm( <nDeviceId> )  -->  <lSuccess>

                        The CloseComm function closes the specified
                        communications device and frees any memory allocated
                        for the device's transmission and receiving queues.
                        All characters in the output queue are sent before
                        the communications device is closed.

   Parameters:

   <nDeviceId>          Specifies the device to be closed. The OpenComm
                        function returns this value.

   Returns:

   <lSuccess>           A logical value indicating if the operation was
                        successful.

   Sample:              See SAMPLES\\TestComm.prg


   Source code:         SOURCE\\WINAPI\\Comm.c

   See also:            OpenComm() WriteComm() ReadComm() BuildCommDcb()
                        SetCommStat() FlushComm() GetCommError()