NAME
        CMD_CLEAR -- Clear console input buffer.

    FUNCTION
        remove from the console input buffer any reports waiting to
        satisfy read requests.

    IO REQUEST INPUT
        io_Message      mn_ReplyPort set if quick I/O is not possible
        io_Device       preset by the call to opendevice
        io_Unit         preset by the call to opendevice
        io_Command      CMD_CLEAR
        io_Flags        IOB_QUICK set if quick I/O is possible, else 0

    SEE ALSO
        exec/io.h, devices/console.h