Android XML. What is the purpose of the star in the ID string?
<p>In some sources I see such declarations</p>

<pre><code>&lt;item
    android:id="@+id/menu_display_groups"
    android:icon="@*android:drawable/ic_menu_allfriends"
    android:title="@string/menu_displayGroup" /&gt;
</code></pre>

<p>Notice the *</p>

<pre><code>@*android:
</code></pre>

<p>It seems to give access to internal resources. But would like to know for sure.</p>

<p>Also curious, if it is safe to build application with such declarations using Android 2.2 SDK, and run it on 1.5.</p>
