WebBrowser Control

What is the purpose of setting the attribute "RegisterAsWebBrowser" for the WebBrowser Control?

From MSDN:

Quote:

---

RegisterAsBrowser Property

--------------------------------------------------------------------------------

Description

Returns or sets a value indicating whether the WebBrowser control is registered as a top-level browser for target name resolution.


Syntax
object.RegisterAsBrowser [= value]



Part Description
object Required. An object expression that evaluates to an object in the Applies To list.
value Optional. A Boolean expression that determines whether Internet Explorer is registered as a top-level browser. If TRUE, the WebBrowser is registered as a top-level browser; if FALSE, it is not a top-level browser. The default value is FALSE.


Applies To

InternetExplorer, WebBrowser

---

i don't get it!!!!

could you put it in a practical term such as in what situation they are set to true