Simple explanation for why datatables uses $.fn.dataTableExt.afnSortData
<p>I saw a post out there:</p>

<p><a href="http://stackoverflow.com/questions/4083351/what-does-jquery-fn-mean">what does $.fn mean</a></p>

<p>However I still don't understand it. Can someone explain this in very simple terms to me. Why did they choose to specify it this way?</p>
