Prime Meridian		Shows how a Shapefile can be rendered across the prime meridian. This makes rendering near the prime meridian look more realistic.
Scale		Shows how rescaling a Shapefile can result in a faster download. Information not shown is discarded before the download takes place.
Area Of Interest		Shows how reording a Shapefile can result in a faster display of an area of interest. Information inside the area of interest is downloaded first.
Image		Shows how generating an image from a Shapefile can result in a faster display. No Shapefile information is downloaded to the client.