There are numerous ways to navigate around PBO H
2O maps:
Drag Extent - By clicking and dragging with your left mouse button, you can drag and recenter the map
Selection Zoom - Hold
SHIFT and drag with the left mouse button to zoom to a selection
Basic Zoom - Use the zoom controls in the upper lefthand corner of the map to
ZOOM IN/OUT from the center of the map
Other Zoom Options - You can double leftclick on the map background to
ZOOM IN on the map. Similarly, double rightclicking (or CNTRL+doubleclick on a MAC) will cause you to
ZOOM OUT.