anchor.diff:      const holder = $('<span>');
       $.each(diffs, (_, diff) => {
         const table = $('' +
  -        '<div id="' + diff.filename + '_diff_div" class="filename_div">' +
  +        `<div id="${diff.filename}_diff_div" class="filename_div">` +
           '<table>' +
             '<tr class="valign-top">' +
               makeTd('<div class="diff-line-numbers"></div>') +
  -            makeTd('<div id="diff_file_content_for_' + diff.filename + '"' +
  +            makeTd(`<div id="diff_file_content_for_${diff.filename}"` +
                      ' class="diff-sheet"></div>') +
             '</tr>' +
           '</table>' +
  
positive.code:             getFilename(previousFilenameNode) === filename;
  
          $('.diff-deleted-line-count, .diff-added-line-count').attr('disabled', true);
          $('.diff-deleted-line-count[data-filename="'+filename+'"]').attr('disabled', false);
          $('.diff-added-line-count[data-filename="'+filename+'"]').attr('disabled', false);
  
          cd.radioEntrySwitch(previousFilenameNode, filenameNode);
  
  
negative.code:                 ` data-colour='${colour}'` +
                  ` data-was-tag='${wasIndex}'` +
                  ` data-now-tag='${nowIndex}'>` +
              `<img class='with-bar-gap' src='/images/bulb_${colour}_${barGap}.png'/>` +
            '</div></td>';
          wasIndex = nowIndex;
          lastColour = event.colour;
  