You can click on the page navigation control to display the pages of your layout with thumbnail previews. You can also increase or decrease the size of the thumbnail preview by pressing the Up or Down Arrow while the Visual Navigator is displaying. If you'd like to see a short video on how to do this, click on the following link:

QuarkXPress 8 Visual Navigator

Below is a view of page thumbnails displayed at the maximum size using the Visual Navigator:

Note: If you do not want to view page thumbnails at all, you can press the Down arrow while the page navigation control is active until only the page icon displays.