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