It seems to be a descendant of both WinHelp and HTML Help. It uses Microsoft's ClearType technology to provide excellent readability, and a program is available to convert existing HTML-based content into Reader files. Several small stories came with the Casio, and the Microsoft CD-ROM contains several dozen more. A link from Microsoft's Web site allowed Pocket PC users to download additional books, including a handful of Star Trek novels. The Pocket Streets program, also on the Microsoft CD-ROM, comes with maps for several major U.S. cities.
Additional maps are available.
The program is a bit slow at displaying maps and scrolling or panning, but this application may prove to be very useful. For instance, I will be visiting two of the supported cities next month and now don't have to worry about finding paper maps of the downtown areas. One thing you don't normally find on a PDA is a browser, and the Pocket PC's browser includes most of the functionality of Internet Explorer 4.0, including scripting. The browser is useful if you have an infrared or other link to a cellular modem or network, or if you want to view local content. However, my Pilot is synchronized to my PC at work and the Casio is attached to my laptop, so I was unsuccessful with this process.