Producing CSH for HTML Help requires:
• CSH destination identifiers in your document
• links from an application program
• usually, a map file and an alias file to connect links to their destinations.
§9.11.1 Inserting CSH destinations in your document
§9.11.2 Determining whether you need map and alias files
§9.11.3 Specifying a map file for CSH links
§9.11.4 Creating an alias file for CSH links
§9.11.5 Understanding alias-file entries
§9.11.6 Producing a list of aliases and associated topic titles
§7.10.1 Understanding how CSH works
http://helpware.net/htmlhelp/how_to_context.htm.