Explore the map
You can use the mouse, keyboard, or toolbar navigation tools to change the map scale by zooming in or out. Your application may also contain a box that allows you to jump between different scales in the map.
If the Web application contains a cached map, your box has a dropdown arrow listing all the cached scales. These are scales at which the map has been pre-drawn and saved on the server as tiled images, allowing you to navigate at those scales very quickly. You are limited to the scales in the box so that you can view the map with the fastest possible performance.
If the Web application does not contain a cached map, you can type any scale you want in the box and the map will jump to that scale.