how many of you guys know about this to invert your whole computer into negative, u know like what you do in photoshop, from white to black thing. if you get tired at staring the white background all day, you can do this to rest ur eyes. i ues this alot when im typing a paper or reading online. i dont know how to explain it so here is what you need to do.
hold down clrl, option, apple and 8.
also for zooming in and out:
hold down apple and - or + (next to the delete button)
if you guys know of any cool tricks, then add on..