panel on the left of the map contains overlays that can be viewed. To
view an overlay, click the tab. In some overlays you can click on individual
buildings or features.
view more than one overlay at a time, click and hold the tab down. To
lock the tab down, keep the mouse button down and slide the mouse pointer
off the tab.
To clear the overlays, use the "clear"
button at the bottom of the tabs.
To zoom closer, use the small map in
the bottom left of the window. To zoom out, click the arrows that appear
in the small map area.
To view individual buildings, select
an overlay tab and then click the link that appears.