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Multimedia Fusion 2 Developer does its best to allow your application to run on various screen sizes. The window size of the application is smaller than the device screen size. The application is zoomed and centered in the display. You do not need to bother with anything, the process is completely transparent to you (screen and touch coordinates are zoomed, etc.). For example, it is perfectly possible to run a 320 × 480 application on an iPad.
The application is reduced and centered on the device screen. Here, too, the process is completely transparent to you. It is perfectly possible to run an iPad application (768 × 1024) on a 3rd-Gen iPhone (320 × 480).