Deletes the sending background buffer

Syntax COM_SFLUSH(<nComPort>) --> lDeleted Argument <nComPort> Designates the port (1 to N) for which the sending buffer is deleted. Returns If the selected sending buffer is successfully deleted, the function returns a .T. Description COM_SFLUSH() eliminates all the characters in a sending buffer. This can be useful when the send routine has been futilely waiting for an XON character (bad software handshake). Notes A COM_SFLUSH() to a closed port does not work. It is not necessary to test for characters in the sending buffer to carry out a COM_SFLUSH(). Example COM_SEND(2, cSendText)