I was a bit annoyed that `Cmd`-`Tab`, in Mac OS, cycled between applications, not windows, on Macs, and I was looking for a way to do this with windows instead. For example, if I have 2 Finder windows and one Firefox window, a shortcut that would bring me from the first to the second Finder window instead of Firefox.

I think I found something like this in the Finder's application menu. Well, when I clicked it, at the first glance, I think it did more or less that. The shortcut mentioned was `⌘`+```. I can find the `⌘` key all right, but what the heck is ```? I'm pretty sure I've tried the whole keyboard.

EDIT: The Macs I have tried this with are running Snow Leopard in French (Canada), and their keyboard configuration is very much akin to the Canadian multilingual standard one that I use on my PC, except for the fact that "complicated" characters are performed with `Alt`+*`key`* instead of `Ctrl`+`Alt`+`*Key*`/`AltCar`+`*Key*`, as it is on Windows.