The Map Viewer also contains 'Zoom Out' tools that increase the amount of geographical data that is visible in the window. Similar to the above 'Zoom In' tools, the Map Viewer contains a "Zoom Out" tool which increases the extent by 50% around the center of the current extent.

The "Zoom Out Mode" setting changes the behaviour of the mouse, and can be used to drag a box across the screen. The Map Viewer will adjust the map extent to provide the maximum enclosure around the selection box. If the mouse is 'clicked' while in 'Zoom out Mode' the extent will be increased around the area where the click occured.