The index (.hhk) file is an HTML file that contains the index entries (keywords) for your index. When a user opens the index in a compiled help file, or on a Web page, and clicks a keyword, the HTML file associated with the keyword will open.
Using HTML Help Workshop, you can:
After you have created a help system or a Web site, you can view the index file in the Help Viewer or by using a Web browser.
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