The Zoom In tool allows the user to increase the scale of the map -- that is, to get “closer” to the map and view smaller areas in more detail.
To zoom in:
1. Select Zoom In from the toolbar.
2. With your mouse click-and-drag to draw a box.
3. The map will recenter and zoom in where you dragged a box.
In the example below, a box is used to define the zoom in parameters. When a user clicks and draws a box on the map, it will increase the scale to a predefined amount and recenters to the location where user dragged the box.