The iPhone and iPad are amazing pieces of engineering. Apple engineers found all kinds of ways to squeeze maximum functionality into a pretty darn small package. One example of this is how these devices can be used in either portrait (tall and skinny) or landscape (short and wide) mode and how that can be changed at runtime simply by rotating the device. You can see an example of this behavior, which is called autorotation, in iOS’s web browser, Mobile Safari (see Figure 5-1).
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