Managing multiple windows will become essential for any application, either through part of a layout design like the preceding, or for presenting important information to the user to gain their attention or receive their input. For each window that's displayed in your application, it's important to know whether its appearance should attract their immediate attention, support what's already onscreen, or simply be something that can be attended to later. Knowing the intention of each window shown will help to support, rather than impede, the user workflow and keep your application's user experience clean.