<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook V3.1//EN">
<chapter><title>Example Chapter</title>

<!-- index term for "Example Chapter" is a span -->
<indexterm id="idxexchap" class=startofrange>
  <primary>Example Chapter</primary></indexterm>

<!-- index term for "Example Chapter" also cross references the 
     "Examples" entry in the index -->
<indexterm><primary>Example Chapter</primary>
  <seealso>Examples</seealso></indexterm>

<!-- index term for "Chapter, Example" refers the reader to the entry
     under which the index term is actually listed, "Example Chapter" -->
<indexterm><primary>Chapter</primary><secondary>Example</secondary>
  <see>Example Chapter</see></indexterm>

<!-- other content -->

<!-- index term, end of "Example Chapter" span -->
<indexterm startref="idxexchap" class=endofrange>

<para>some content</para>
</chapter>