docs: function() {
          elemData.buttonText = buttonEditor.find('.kelmu-button-text').val() || '?';
          elemData.font = buttonEditor.find('.kelmu-button-font').val() || window.kelmu.defaults.button.font;
          elemData.size = buttonEditor.find('.kelmu-button-size').val() || window.kelmu.defaults.button.size;
          elemData.rotate = buttonEditor.find('.kelmu-button-rotate').val() || window.kelmu.defaults.button.rotate;
          elemData.button = buttonEditor.find('.kelmu-button-action').val() || 'show';
          elemData.parameter = buttonEditor.find('.kelmu-button-parameter').val();
          window.kelmu.data[id].actions.update();
          updateView(true, true);
          notifyModifications();
        }