NAME
        IND_SETPERIOD -- Set the key repeat period

   FUNCTION
        This command sets the period at which a repeating key repeats.

        This command always executes immediately.

   IO REQUEST - a timerequest
        tr_node.io_message      mn_replyport set if quick i/o is not possible
        tr_node.io_device       preset by the call to opendevice
        tr_node.io_unit         preset by the call to opendevice
        tr_node.io_command      ind_setperiod
        tr_node.io_flags        iob_quick set if quick i/o is possible
        tr_time.tv_secs         the repeat period seconds
        tr_time.tv_micro        the repeat period microseconds