The zoom and pan tools allow you to
change the map extent.
Zoom in or out by clicking the center of
the area to zoom in to or out from, or by clicking and dragging a
box around it.
Zoom to the full extent of the map, the
extent of the active layer, or the last extent by clicking the
appropriate button on the toolbar. See the map
viewer toolbar for more information.
Pan the map by clicking the map and
dragging it, or by clicking one of the unidirectional pan buttons:
Pan to North, Pan to South, Pan to East, and Pan to West.