AbortOnError BaudRate ByteSize DsrSensitivity DtrControl EofChar ErrorChar ErrorCharReplace EvtChar InX NullStrip OutX OutxCtsFlow OutxDsrFlow Parity ParityCheck RtsControl StopBits TXContinueOnXoff XoffChar XoffLim XonChar XonLim

XonLim unsigned short XonLim Specifies the minimum number of bytes allowed in the input buffer before the XON character is sent.