OSX features full-screen mode in recent versions but that's not really the same thing as automatically resizing a window to use the full desktop like on Windows...
And, what is the
+ button supposed to do exactly? It generally seems to make the current window a bit bigger but not in an obviously consistent way.
Somehow I can't figure out how this is supposed to work (or I'm too used to the Windows way of things), so any explanation would be apprecated.