Navigating the Map
Clicking and dragging the mouse over the map will pan, unless you click over a mark on the map, in which case information about that item will be displayed.
The buttons that appear above the map are additional controls for navigation:
Zoom In Button: Clicking this button causes zooming towards
the central point of the map. Zooming continues as long
as the button is held down.
Zoom Out Button: Clicking and/or holding down this button
causes zooming out, unless the map is already fully visible.
Zoom To Box: Clicking this button allows you to drag a zoom
rectangle with the mouse. When the mouse is released after dragging, the view
will zoom to the specified rectangle.
Full Extent Button: When clicked the full extent of the
map is displayed.
Locator
Control: This is not used.
Help Button: When clicked these instructions are displayed.