A modular HTML Help system's hub file uses two mechanisms to reference the components: Merge tags in the Contents (.HHC) file to combine the components' tables of contents with that of the hub; and [Merge Files] entries in the project (.HHP) file to include the components in the hub HTML Help file's Index and Find features.

Merge Tags

A typical Merge tag looks like this:

<OBJECT type="text/sitemap">

<param name="Merge" value="File.chm::/File.hhc">

</OBJECT>

HTML Help Contents files can be merged even if the HTML Help files are not compiled .CHM files.

[MERGE FILES]

Syntax of the [MERGE FILES] section is very simple; just list the .CHM files, as shown here:

[MERGE FILES]

Alpha.chm

Bravo.chm

Charlie.chm

Support for the [MERGE FILES] section is limited to compiled HTML Help (.CHM) files.