          // SPINNER
          Monocle.Reader('spinner', bookData, readerOptions, function (rdr) {
            window.reader4 = rdr;
            var spinner = Monocle.Controls.Spinner(rdr);
            rdr.addControl(spinner, 'page', { hidden: true });
            bookTitle = createBookTitle(
              rdr,
              {
                start: function () {
                  if (spinner.spinning) {
                    spinner.spun();
                    spinner.spinning = false;
                  } el