• Left-Click and Drag to move map. • Double-Click to zoom into an area. • Click the "Zoom Icon" then click on map to create zoom area. • Click on "Add Marker" then click on map to place a new marker. • To remove a marker, click on the marker then click on "Delete". • The current map center lat/lon and zoom level are shown at bottom of the map. • The link at the bottom of the map can be used as a "bookmark" for the current map location.

Some markers are "grouped", for speed of display, when there are a large number of markers in one area. These grouped markers represent multiple markers that "expand" as the map is zoomed in to display other markers.