{TAIL ~ Each} of the levels of scheduling hierarchy might have {HEAD ~ one or more corresponding mapping tables} in Queue Engine 308 
{ TAIL ~ Each } of the levels of scheduling hierarchy might have { HEAD ~ one or more corresponding mapping tables } in Queue Engine 308
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH