In one embodiment, when some peer software wants to accept {TAIL ~ incoming pipe messages}, {HEAD ~ the receive operation} may remove a single message in the order it was received, not in the order it was sent 
In one embodiment , when some peer software wants to accept { TAIL ~ incoming pipe messages } , { HEAD ~ the receive operation } may remove a single message in the order it was received , not in the order it was sent
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH