If you are wondering what the schema above is useful for, either you don't need it or you should read the developers mailing list archives.
On the project page you'll find two packages: dewmaster is for webmasters, dwai-client is for final users. You need to install the dwai-client if you want to try packages installation in the demo page.
This "site" is optimized for Lynx, but you can view it with almost any other browser.