anchor.diff:    const refreshTrafficLights = () => {
       const trafficLights = $('#review-traffic-lights');
       trafficLights.html(makeTrafficLightsHtml(param.lights));
  -    $.each($('img[src$="_gap.png"]'), function(_, light) {
  -      const index = $(this).data('index');
  -      const tag = $(this).data('tag');
  -      $(this)
  +    $.each($('img[src$="_gap.png"]'), (_, light) => {
  +      const $light = $(light);
  +      const index = $light.data('index');
  +      const tag = $light.data('tag');
  +      $light
           .attr('title', toolTip(index))
           .click(() => { show(tag); });
       });
  
positive.code: 
  <script type="text/javascript"><!--
  
  $(function() {
  
    //---------------------------------------------------------------------
    // This review page doubles as a review *dialog* from the kata/edit page
  
negative.code:       button
          .attr('title', toolTip(newTag))
          .unbind('click')
          .bind('click', () => { show(newTag); });
      }
    };
  
  