er to display a modal dialog on the "back" of the window that owns the dialog. </p> <p><strong>Doesn't that obscure the window contents?</strong></p> <p>Well, yes, but that's part of the point of the whole exercise: considering new, innovative user interface elements that are possible based on 3D technology.</p> <p>One of the more realistic concepts is the way our demonstration window manager slides windows over at an angle. You can rotate a window to put it in the background, so you can still see the windo