By now, you should have a good understanding of the basics of HTML, as well as a grasp on how to make your Web pages more colorful and attractive. If you took the time to do the Saturday Evening bonus session, you should also have a good understanding of HTML tables.
Frames enable the creation of pages that can simultaneously display multiple documents in separate scrollable (or non-scrollable) windows. Although frames weren't included in the official specification for HTML until version 4.0, they've been around for sometime, having first been introduced as an HTML extension by Netscape. Microsoft Internet Explorer also supported using frames long before they were officially included as a standard HTML feature.
This session is optional for this weekend. Save it for another weekend, if you like. Feel free to do any previous session you have yet to complete as your Sunday Morning session, or you can skip ahead and do any of the other Sunday sessions at this point.