code: function step(e, w, func) {
              e.stopPropagation();
              e.preventDefault();
              if (!click && !isReadOnly(w) && !w.hasClass('dwa')) {
                  click = true;
                  // + Button
                  var t = w.find('.dw-ul');
  
                  setGlobals(t);
                  clearInterval(timer);
                  timer = setInterval(function () { func(t); }, s.delay);
                  func(t);
              }
          }
docs: Private functions