This is the second document you loaded when you clicked on the link below. As you can see, you can load an infinate number of HTML documents within this I-Frame. This gives you the ability to display any number of documents within the same HTML page without reloading your main document, thereby keeping your visitors on your initial page. By setting the background and text to the same color scheme, it appears as though you are actually scrolling information on the same page, only with a lot less scripting. This also gives you the ability to change your text documents without changing the initial page.