HTML Help Workshop is a help authoring tool that allows you to create and manage Microsoft HTML Help projects and their related files. You can use this tool, which is installed with ePublisher, to further customize your help, such as changing the appearance of the Contents and Search tabs. You can also create an override for your project .hhp file in your ePublisher project, which allows you to implement the custom HTML Help Viewer window you need. For more information about Microsoft HTML Help and its related files and customization options, see the help for HTML Help Workshop.