public IFrameworkElementCreator FrameworkElementCreator { get; set; }

Public Property FrameworkElementCreator As IFrameworkElementCreator
	Get
	Set

public:
property IFrameworkElementCreator^ FrameworkElementCreator {
	IFrameworkElementCreator^ get ();
	void set (IFrameworkElementCreator^ value);
}

This is more dynamic in nature and allows for embedding things like WebBrowser controls that cannot be cached for reuse in each pane invocation but rather needs creating each time.