It works on a Mac too. Only instead of right-click, you ctrl-click.

I have a three button mouse on my Mac laptop. It worked out of the box.

(Am I the only Mac user on AWADtalk?)

No, I believe eta uses a Mac. I used Windows, Mac, and Unix, so I occasionally visit this site using browsers under all three of those OSes.

Ceci n'est pas un seing.