Question about serverside draw parameter

I noticed that if the draw parameter is missing or set to 0 Datatables will draw the table. Its this code

        if ( draw ) {
            // Protect against out of sequence returns
            if ( draw*1 < settings.iDraw ) {
                return;
            }
            settings.iDraw = draw * 1;
        }

in _fnAjaxUpdateDraw that allows this. Just highlighting it in case that behavior is not intentional.

Kevin