I have just thought of a new feature for Mac OS X. At least I think it is new. I hereby give to Apple all of my rights to this idea, and I hope they will implement it. When I hit F10 to apply Exposé to all windows of an application, I would like to be able to make those window sizes and positions stick. I'd press another key or click somewhere, Exposé would end, and the windows would remain in the new positions and sizes that had been shown by Exposé. Their content would return to normal size (no longer scaled), but the windows would remain as Exposé displayed them. I call this feature "Exposé and Stay." For example, I have 5 TextEdit windows open. I'm going to do some editing and will need to switch back and forth among them, but TextEdit doesn't happen to have a "Window>Tile" menu choice. Since Exposé already has a tiling algorithm, I'd like to use it to rearrange my TextEdit windows. So I should be able to press a key or click something on the menu bar or in the Exposé display to do this. This would work only for windows that resize and reposition by the usual Finder techniques, which is almost all windows in almost all apps. After all, why shouldn't window tiling be a function of the Finder, by default, for all applications? This feature could work for F9 (all windows) too, but would be less useful to me, since my usual 15 to 20 windows would end up too small. But there's no reason not to extend the Exposé and Stay feature to F9 as well, for those who would use it in that way.