 declarations as part of handling or interacting
with your application. For this reason, it's very important that you declare all of
the features (from the list below) that your application uses. </p>

<p>For some features, there may exist a specific attribute that allows you to define
a version of the feature, such as the version of Open GL used (declared with
<a href="#glEsVersion"><code>glEsVersion</code></a>). Other features that either do or do not
exist for a device, such as a camera, are declared usi