Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route.

Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class.

Gets or sets the RoutedEvent associated with this RoutedEventArgs instance.

Gets or sets a reference to the object that raised the event.

This is used to get or set the topic file content if it is found

This read-only property returns the topic filename that the previewer wants