The easiest way to Zoom Out is to click on the Zoom Out Tool.
Here is another handy key combination for zooming out.
Hold down both your <Shift> and <Ctrl> keys.
Click on a point on the map.
Do not release your mouse!
Drag a rectangle.
The map will zoom out.
You can hold down <Shift> + <Ctrl> to drag a rectangle in any JavaScript Web Application to zoom out.
This is another universal keyboard shortcut for zooming out.
