For this option to work, the executable files called by the custom build rules on the .hpj, .cnt and resource.h files must be in a directory listed in the Directories tab of the Options dialog box. (Click Options from the Tools menu.) By default, these files are installed to the \BIN directory of your Visual C++ installation and included in the Options dialog box, so unless you modify either of the default settings, your Help compilation will be a completely transparent part of building your project files.
To compile your Help files from within the development environment
This invokes the custom build rules on the .hpj, .cnt and resource.h files, which in turn calls the following two programs: