. "FIGS. 5A, 5B, 6A, 6B, and 7A, 7B each taken together, are a schematic block diagrams of the system of FIGS. 2A and 2B, further defining additional paths (5A, 5B and 6A, 6B only) and back channels (7A, 7B only) that the RTC and RTS tokens can take as they flow through the system; and" . . . . .