Zoom Slider widget
(Added at v1.2)
The Zoom Slider widget provides interactive zoom controls in the map display. Hover over the Zoom Slider widget and click the show or hide button 
to show or hide this widget on the map.
Configure the Zoom Slider widget
No configuration is needed for the Zoom Slider widget.
Use the Zoom Slider widget
Click the zoom slider button 
to zoom in or out on the map.