I also found this part of the tutorial confusing. Thanks for asking the question and for the answer Jason. It would be nice to add this clarification to the tutorial so that other users might not have the same issues understanding this..
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.