{HEAD ~ The internal decision making engine} generates a forwarding port vector and outputs {TAIL ~ the result} for data forwarding purposes 
outputs
{ HEAD ~ The internal decision making engine } generates a forwarding port vector and outputs { TAIL ~ the result } for data forwarding purposes
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH