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