You can match annotations with the corresponding annotated objects. For example, consider a simple document reader application that has a comments pane. The comments pane might be a listbox that displays the text from a list of annotations that are anchored to a document. If the user selects an item in the listbox, then the application brings into view the paragraph in the document that the corresponding annotation object is anchored to.
The following piece of C # code demonstrates how to implement the event handler of such a listbox that serves as the comments pane.