You can click a point on the map to recenter the map on that point and zoom out.
The map zooms out on the point you clicked and displays the map at half the previous magnification.
You can continue to zoom out by clicking another point in the map. When you finish zooming out, press Esc, click the SELECT button on the toolbar, or choose SELECT > SELECT from the Map Window popup menu. Note that pressing Esc does not work if you are using the Java edition of the Viewer on an Apple Macintosh computer.