For example, if the user clicks on Weather Server 26, {HEAD ~ the path} from User PC 20 to {TAIL ~ Weather Server} 26, which consists of graphical links 10, 11 and 15, would switch from grey to flashing green 
to
For example , if the user clicks on Weather Server 26 , { HEAD ~ the path } from User PC 20 to { TAIL ~ Weather Server } 26 , which consists of graphical links 10 , 11 and 15 , would switch from grey to flashing green
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL 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