When you click 5 areas in the top part, you'll see 5 Isolation Diagrams that show 3 Cycles, either by isolating “only what's needed for a single Cycle” or for two or three Cycles.     { note:  These “isolations” were made from an older version of Diagram 3b, and it has fewer details than the current Diagram 3b. }    { and you can see 5 analogous Isolation Diagrams for Diagram 4a. }