Hi Bill,
Many tanks for the prompt answer.

> Does anything happen after the first Go To... Coordinates...
> Opposition? Does Guide go to some incorrect place, or not
> update the screen at all, or...?

Always Guide goes to AR 0 Decl 0

> Hitting Alt-U should also cause Guide to go to the opposition
> point. Does this work?

The same as above.

-- Dario