I’m trying to automate an application that’s very non-standard using System Events, which seems to be recommended.

However, the only thing System Events can find is something called “menu bar 1”. For example:

activate application "Foo"
tell application "System Events"
    tell process "Foo"
        click at {500, 500}
    end tell
end tell

prints

menu bar 1 of application process "Foo" of application "System Events"

I can ask what UI Elements are in the app:

activate application "Foo"
tell application "System Events"
    tell process "Foo"
        UI Elements
    end tell
end tell

which prints

get every UI element of process "Foo"
        --> {menu bar 1 of application process "Foo"}

The menu bar itself has no real actions available. How can I get access to the main content of the app so I can click on things?