Contains various graphic overlays.

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	Class	Description
	BingTrafficLayer	TileLayerOverlay which displays tiled traffic information from the Bing Maps service.
	Circle	A graphical overlay which displays the circle shapes.
	FeedLayer	FeedLayer is a special Layer that can create overlays from a KML, GeoRSS or GPX source.
	GeoRSSLayer	Layer for GeoRSS file format.
	GPXLayer	Layer for GPX file format.
	KMLLayer	KMLLayer is a special Layer that can create overlays from a KML source.
	Layer	Layer is a special IOverlay that can be used as a container for IOverlay objects.
	Marker	Marker is an overlay used for indicating positions on the map.
	Overlay	Overlay is a base class for all UMap graphical overlays.
	Polygon	Polygon
	Polyline	Polyline
	RouteLayer	Interactive Layer which displays the routing information and provides a simple drag-n-drop interface.
	TileLayerOverlay	An Overlay wrapper class for ITileLayer interface.