In {TAIL ~ other words}, an active control signal 47 turns on an isolation device to allow a potential to be conducted from one location to {HEAD ~ another location} 
In { TAIL ~ other words } , an active control signal 47 turns on an isolation device to allow a potential to be conducted from one location to { HEAD ~ another location }
OTH TAIL TAIL TAIL TAIL TAIL TAIL 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 HEAD