show overviewbutton on the applet reveals or hides a small window showing a national map. The region shown in the main applet window is indicated as a rectangle in the overview window. You may move or resize the rectangle in the overview window by dragging with the mouse. To move, place the mouse inside the rectangle (the cursor will change to a 4-pointed arrow) and drag. To resize, place the mouse inside but near the rectangle border (the cursor will change to a horizontal or vertical double arrow), then drag. The rectangle's new size and location will be reflected in the main window shortly after you release the mouse button (1-2 seconds on my 166 MHz machine). Tip: if you lose track of the overview window, try clicking the
Overviewbutton a few times. Another tip: you can always use the
resetbutton of the applet to bring the map back to its initial configuration (while still showing the currently loaded data).
These are not well commented yet, and are provided as is. Please provide me with any feedback you wish to at the address below.