From the web site

3)
Let’s say that you were watching Oprah on the 24th of September, 2001, and an interesting book was reviewed. You pressed the Zap button. When you connect your Harmony to the web, the web site presents a link on your Zap page to the correct episode.
[Link: easyzapper.com]

and you can find the on-line manual [Link: harmonyremote.tzo.com]