the meaing of android style item name
<p>In Android styles, you can define something like:</p>

<pre>
&lt;item name="android:scrollbars"&gt;vertical&lt;/item&gt;
</pre>

<p>which means, you are giving a value "vertical" to the UI property "scrollbars" to make the scrollbars vertical.</p>

<p>But what about something like this:</p>

<pre>
&lt;item name="fullDark"&gt;@android:drawable/popup_full_dark&lt;/item&gt;
</pre>

<p>I notice the name doesn't have "Android:" prefix, why? And where is "@android:drawable/popup_full_dark" coming from?</p>
