This will update the scale to the number entered. This is useful when printing the map. If you enter 63360, 1 mile on the map should equal one inch on paper when the map is printed.

Example: You may want 1 inch to equal 4 miles. To calculate, multiply the ratios(fractions) to cancel the units. This gives the
1 inch / 4 miles * 1 foot / 12 inches * 1 mile / 5280 feet = 1/253440.
All units cancel giving a scale of 1 : 253440. When the map is printed from the pdf that is created, there should be 4 miles in every inch.

If an image did not draw properly or if some data is dynamically updated this button will refresh the images to the latest.

This adjusts the size of your map and other elements to best fit in the current browser window. Some browsers do not resize properly.

When you click on the reference map, the visible extent in your map will be centered at the point of the click. The current extent is shown by the red box.