text: /*global JSAV, document */
  // Written by Sushma Mandava
  //variable xPosition controls the horizonatl position of the visualization
  $(document).ready(function() {
    "use strict";
    var av = new JSAV("empRefnullCON", {animationMode: "none"});
    var xPosition = 375;
    var yPosition = 5;
    var length1 = 100;
    var width = 35;
    av.g.rect(xPosition, yPosition, length1, width);
    av.g.line(xPosition, yPosition, xPosition + length1, yPosition + width,
              {"stroke-width": 2});
    av.label("<tt>emptyRef</tt>",  {top: yPosition, left: xPosition - 65});
    av.displayInit();
    av.recorded();
  });
  