Daring Fireball: Nottke: Expose works on Macs b/c the window belongs to the application; doesn’t work on PCs because the application belongs to the window! Related to kottke’s Sherfari:
“On the Macintosh, the visual scope of an application is the entire display. They are not contained within windows; windows belong to applications, not the other way around. Compare and contrast to the Windows MDI interface, in which an application is contained in a window, within which window are the app’s document windows, “a desktop within a desktop.”