anchor.diff:  
     // - - - - - - - - - - - - - - - - - - - - - - - -
   
  -  var showLatestNoDiff = function() {
  -    var lastTag = -1;
  +  const showLatestNoDiff = () => {
  +    const lastTag = -1;
       param.wasTag = lastTag;
       param.nowTag = lastTag;
       refresh();
  
positive.code:       refreshForkButton();
        refreshRevertButton();
        refreshDownloadButton();
        var light = $('img[src$="_bar.png"]');
        var options = { direction: 'horizontal', duration: 'slow' };
        light.scrollIntoView(options);
      });
    };
  
negative.code: 
    // - - - - - - - - - - - - - - - - - - - - - - - -
  
    const refresh = () => {
      if (inDialog()) {
        reviewRefresh();
      } else {
  