Thank you, JJJ! I see what you mean about showing all of the flight paths. Looks a bit like something put together by a psychotic spider! I notice the green line, presumably representing the highlighted flight? Nicely done.
You are pumping out revisions to the ME faster than I can try them out! Unfortunately, I must be away from my computer most of the day, so I won't be able to try out your latest version until tomorrow. Still, fantastic work!