Getting Started with the Map Viewer : Getting acquainted with the navigation tools : Map navigation buttons
  
Map navigation buttons
When viewing a map, several buttons display in the lower-left corner of the map that allow you to quickly pan or display the full extent of the map. You can also rotate the map using the Map rotation ring. Drag the north icon along the map rotation ring to rotate the map. Note that the north icon would always point in the north direction of the map. Double-click the north icon to reset it to its original position.
Figure 5