Why do many android classes (examples and source) begin with "m"?
<p>I have been looking over some of the android source, and the examples given in the Dev guide, and I notice that many of their classes begin with the letter m, as in the example below:</p>

<pre><code>    // Create an anonymous implementation of OnClickListener
private OnClickListener mCorkyListener = new OnClickListener() {
    public void onClick(View v) {
      // do something when the button is clicked
    }
};
</code></pre>

<p>From this page: <a href="http://developer.android.com/guide/topics/ui/ui-events.html">http://developer.android.com/guide/topics/ui/ui-events.html</a></p>

<p>What does the m signify?</p>
