What doen $f mean in jquery scripts?
<p>I see the function $f being used in a number of jquery related scripts, but I can't find a description of what this means anywhere.</p>

<p>Example</p>

<pre><code>var iframe = document.getElementById(iframe_id);
this.player = global.$f(iframe);
</code></pre>

<p>Can anyone point me to documentation?</p>
