In accordance with another aspect of the invention, there is provided a switching controller apparatus for use in {HEAD ~ a system} comprised of {TAIL ~ a plurality} of switching controllers 
In accordance with another aspect of the invention , there is provided a switching controller apparatus for use in { HEAD ~ a system } comprised of { TAIL ~ a plurality } of switching controllers
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 REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH