With this dialog you can insert a component that can show a popup window, can change the content of a window (or a frame) or can close a window. The action is triggered when the user enters the page that contains the component.
This is useful for nice tricks (when you enter a page, or when you click a link that changes a page, the use of several copies of this component can show windows and/or change the content of several frames)
For example, in the above dialog we have chosen to show the popup called “Goofy”, 400x300 pixels. In the following window instead, we choose to replace the frame “BottomFr”.