This example implements a MDI Web Browser. When you click a link in a web page that will open in a new window, the event is captured and the application creates a new tab and a new instance of the WebBrowser control, and the web page is displayed in it instead of opening a new instance of Internet Explorer.
You can also create new tabs by clicking the new tab toolbar icon or the new tab menu option, and being a MDI application, it allows cascading, vertical and horizontal tiling, and minimize.