The help system is implemented using a custom WWW server. Any frames-compatible browser can be used to connect to the server and view the help and online documentation. Needless to say, all documentation is done via html. The documentation is pretty good. I would have liked to find a single section that listed all of the differences between versions 4.0 and 3.x.
Additional documentation is shipped in pdf files.
Personally I don't like reading pdf files on the computer. This book is divided into several pdf files, making it impossible to search for keywords. It's not possible to print a section off for easy reading away from the computer. Overall, I found the usefulness of this to be limited. Some are formatted nicely for printing while others have close to a 3-inch margin at the bottom of the page.