Common Desktop Environment: Help System Author's and Programmer's Guide

To Add an ID to an Element within a Topic

    If the element supports an author-defined ID, use the id parameter for the element as follows:

<element id=id>  ...

The elements (within a topic) that support an ID attribute are:

Or, use the <location> element to set an ID at an arbitrary point within the topic as follows:

<location id=id> text <\location> 

Where text is any word or phrase where you want to add an ID. The <\location> end tag is required. When you activate a link to a location ID, the Help Viewer displays the topic containing the ID and scrolls the window to the ID position.