Click anywhere in the small keymap to go to the same row and column address on the full-size map. If your browser takes you to the left end of the target row, scroll to the right using the mouse or keyboard.

Rows in the maps are numbered 1 through 7, and columns are numbered A through D. In the text of the Guide to the Map, a link to the large map looks like this: 5A. Two addresses, as in 6A:7B, represent the upper left and lower right panels of the area of interest. These links will take you to the first (upper left) row and column address they name.

To return from the large map to the text, click on Back in your browser. To return to the small map, click on the large map.

An 800 x 600 pixel computer screen will let you view an entire a map panel at once, though a larger screen is better. Maximize your browser window and hide your browser's toolbars to make more room for the image. Your browser's cache should have at least 1 MB, and system RAM should have at least 16 MB of capacity to allow new parts of the map to display quickly at a color depth of 256 colors. If you switch to the page with colored backgrounds and set your display to 16-bit color, you will need at least 32 MB of system RAM for quick display.

To see the entire map at once, print it out with a halftone screen or on a photographic quality printer to avoid jagged edges in the image. The printout will take many pages that you will have to paste together, unless you have a very large printer or reduce the image size.