 application authors can
    				obtain the text from the relevant timeline marker entry through their
    				event handler implementations, and can display captions in the user
    				interface area where the text captions are displayed. Typical Silverlight
    				controls that can be used for displaying text captions include TextBlock (nonfocusable), TextBox,
    				or RichTextBox. A typical interface design would place
    				the caption-display control in close proximity to the MediaElement control