This section enables you to add or overwrite sections of the HHP project file used to generate your HTML Help output. (See HTML Help project files for details). Normally you will never need to use this feature but there may be situations where you want or need to make changes to your HTML Help output by making changes or additions to the HHP file.
Please only use these feature if you understand HHP files and how to edit them. You can find information on the settings in the documentation distributed with Microsoft HTML Help Workshop.
HTML Help (Help Formats)
HTML Help Options (Help Windows)