The Simulation Engine accepts simulation inputs and calculates various outputs and notifies {HEAD ~ the system} of {TAIL ~ the status} of the simulation at a given time in order to obtain appropriate feedback 
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The Simulation Engine accepts simulation inputs and calculates various outputs and notifies { HEAD ~ the system } of { TAIL ~ the status } of the simulation at a given time in order to obtain appropriate feedback
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH