In accordance with still another feature of the invention, the communication mechanism contemplated by the present invention allows {HEAD ~ the two concurrent processes} to operate in {TAIL ~ synchronization} 
to operate in
In accordance with still another feature of the invention , the communication mechanism contemplated by the present invention allows { HEAD ~ the two concurrent processes } to operate in { TAIL ~ synchronization }
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 HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL