{HEAD ~ One such function} is {TAIL ~ the prepending} of the protocol symbol to the first data byte of the message frame that occurs in response to handshaking of the MCU 
is
{ HEAD ~ One such function } is { TAIL ~ the prepending } of the protocol symbol to the first data byte of the message frame that occurs in response to handshaking of the MCU
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH