(actually, I go back to the IBM 7094 and the IBM 1401, both prior to the 360)

Thank you, Y-Phil. I will have a look! But I will probably put it off for a bit while I finish wiring this monster:

You'll notice that some dials aren't wired yet, and even more are missing under Middle and Right Light. And -- I don't even have an intended use for it. It just caught my attention as a "bet I could" idea. This after finally having a light turn on about dependencies and master parameters (thanks guys!).

I do have a wild guess about Sasha though. My wild guess is that it's done by adding Value Ops to the Value Operations tab in the Edit Dependencies tab.