The VRO then calculates optimized control commands for {HEAD ~ various network devices} including {TAIL ~ the controllable taps} of voltage regulating transformers 
The VRO then calculates optimized control commands for { HEAD ~ various network devices } including { TAIL ~ the controllable taps } of voltage regulating transformers
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH