What format is Windows CE Help in?
Windows CE help files are simple html files. There are two file extension types for windows CE help; .htc and .htp. The first, .htc, is the main link into your applications help system. Typically, this help file should be named myapp.htc, where myapp is the name of your application. You can use only one help file, or have links into other files. Other files can be named whatever you like, but is it probably a good idea to use a name related to your application, like myapp_config.htp, myapp_usage.htp.