SerialSignal_CTS
if (info->signals & SerialSignal_CTS)
info->signals |= SerialSignal_CTS;
info->signals &= ~SerialSignal_CTS;
if (info->signals & SerialSignal_CTS) {
if (!(info->signals & SerialSignal_CTS))
((s & SerialSignal_CTS) ? MgslEvent_CtsActive:MgslEvent_CtsInactive) +
((info->signals & SerialSignal_CTS) ? TIOCM_CTS:0);
info->signals |= SerialSignal_CTS;