Hi guys, you'll have to excuse me if this is a dumb question, but I'm a new mac user and I just learned about expose yesterday. I tried to search for the answer but didn't get anything. According to apple's website, f9 and f10 are supposed to control expose functions. One tiles all windows and the other tiles all windows in an app (not sure which is which). Only problem is on my mbp15 they don't do those things. f11 does work, which exposes my desktop so i can get to it easily. These two buttons don't do anything though... and they both have symbols on them that almost look like little rising suns. Not backlight buttons but perhaps keyboard light buttons? Does anyone know what I'm dong wrong?