S> A technique for regulating the flow of data acroSS an interface by meanS of SignalS carried on Separate wireS. A common example iS the RTS (RequeSt to Send) and CTS (Clear to Send) SignalS on an EIA-232Serial line. The alternative, Software handShaking, uSeS two Special characterS inSerted into the data Stream to carry the Same information. (1995-01-23)