How can I know the Methods/Properties of the returned object?

[Joey1986]

Thanks for your ole view tool!

I have a question. In ProgIDs tab, I find the InternetExplorer.Application , right-click it and View TypeLibrary, now in the Microsoft Internet Controls tab, then click the IWebBrowser interface, in the right pane, there're Methods/Properties, but sometimes returned object, like object Document { get; } in the image.

How can I know the Methods/Properties of the returned Document object?

I'm a rookie and sincerely looking forward to your reply.