 example, if your app requires portrait orientation, you should declare
<code>&lt;uses-feature android:name="android.hardware.screen.portrait"/></code> so that only devices
that support portrait orientation (whether always or by user choice) can install your app. If your
application <em>supports</em> both orientations, then you don't need to declare either.</p>
    <p>Both orientations are assumed <em>not required</em>, by default, so your app may be installed
on devices that support one or both orientation