Type	Topic	Version
class	MapKit	14.1

Function: The MKOverlayView class defines the basic behavior associated with all overlay views.
Notes:
An overlay view provides the visual representation of an overlay object—that is, an object that conforms to the MKOverlay protocol. This class defines the drawing infrastructure used by the map view but does not do any actual drawing.

The Map Kit framework provides several concrete instances of overlay views. Specifically, it provides overlay views for each of the concrete overlay objects. You can use one of these existing overlay views or define your own subclass if you want to draw the overlay contents differently.

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