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<toc-title-group> Table of Contents Title Group

Container element to hold the various titles for a structured Table of Contents (or a subdivision of such a ToC).

Usage/Remarks

This is very similar to the BITS <title-group> element, but made specific to the Table of Contents elements, so that the article-level or document-part-level <title-group> can be modified without consequences to this element and this element also can change freely, without side effects.
Related Elements
In the metadata for a book or book-part, there are several elements concerned with the title of a book or a book component. Such titles are contained within container elements: <book-title-group> (inside the <book-meta>), <title-group> (inside book parts such as chapters), <index-title-group> (inside an Index), or the <toc-title-group> (inside a Table of Contents).
Attributes

Multi-lang Attributes

lang-focus
lang-focus-custom
lang-group
lang-source
lang-source-custom
lang-translate
lang-variant
lang-variant-custom

Base Attributes

id
xml:base
xml:lang
Models and Context
May be contained in
<toc>, <toc-div>, <toc-group>
Description
The following, in order:
Content Model
<!ELEMENT  toc-title-group
                        %toc-title-group-model;                      >
Expanded Content Model

(label?, title?, subtitle*, trans-title-group*, alt-title*, fn-group*)

Tagged Samples
Multilevel Table of Contents with empty navigation pointers (@rids) 
...
<front-matter>
 <toc>
  <toc-title-group>
   <title>Contents</title>
  </toc-title-group>

  <toc-entry>
   <title>Acknowledgments</title>
   <nav-pointer rid="tc1"/>
  </toc-entry>
  <toc-entry>
   <title>Executive Summary</title>
   <nav-pointer rid="tc2"/>
  </toc-entry>

  <toc-div content-type="sections">
   <toc-title-group>
    <title>Mental Health Services</title>
   </toc-title-group>

   <toc-entry>
    <label>Section 1</label>
    <title>Introduction</title>
    <nav-pointer rid="tc3"/>
   </toc-entry>
   <toc-entry>
    <label>Section 2</label>
    <title>Mental Health of the Population</title>
    <nav-pointer rid="tc4"/>
   </toc-entry>
   <toc-entry>
    <label>Section 3</label>
    <title>Providers and Settings for Mental Health Services</title>
    <nav-pointer rid="tc5"/>
   </toc-entry>
   <toc-entry>
    <label>Section 4</label>
    <title>Payers and Payment Mechanisms</title>
    <nav-pointer rid="tc6"/>
   </toc-entry>
   <toc-entry>
    <label>Section 5</label>
    <title>States: People, Providers, and Payers</title>
    <nav-pointer rid="tc7"/>
   </toc-entry>
   <toc-entry>
    <label>Section 6</label>
    <title>Data Gaps</title>
    <nav-pointer rid="tc8"/>
   </toc-entry>
   <toc-entry>
    <label>Section 7</label>
    <title>Tables</title>
    <nav-pointer rid="tc9"/>
    <toc-entry>
     <label>7.1</label>
     <title>Mental Health of the Population</title>
     <nav-pointer rid="tc10"/>
    </toc-entry>
    <toc-entry>
     <label>7.2</label>
     <title>Providers and Settings for Mental Health Services</title>
     <nav-pointer rid="tc11"/>
    </toc-entry>
    <toc-entry>
     <label>7.3</label>
     <title>Payers and Payment Mechanisms</title>
     <nav-pointer rid="tc12"/>
    </toc-entry>
    <toc-entry>
     <label>7.4</label>
     <title>States: People, Providers, and Payers</title>
     <nav-pointer rid="tc13"/>
    </toc-entry>
    <toc-entry>
     <label>7.5</label>
     <title>References</title>
     <nav-pointer rid="tc14"/>
    </toc-entry>
   </toc-entry>
  </toc-div>

  <toc-div content-type="appendices">
   <toc-title-group>
    <title>Appendices</title>
   </toc-title-group>

   <toc-entry>
    <label>Appendix A</label>
    <title>Data Source Descriptions</title>
    <nav-pointer rid="tc15"/>
   </toc-entry>
   <toc-entry>
    <label>Appendix B</label>
    <title>Glossary</title>
    <nav-pointer rid="tc16"/>
   </toc-entry>
   <toc-entry>
    <label>Appendix C</label>
    <title>Glossary</title>
    <nav-pointer rid="tc17"/>
   </toc-entry>
  </toc-div>

 </toc>
</front-matter>
...
Multilevel Table of Contents entries with print page numbers 
...
<front-matter>
 <toc>
  <toc-title-group>
   <title>Contents</title>
  </toc-title-group>

  <toc-entry>
   <title>Acknowledgments</title>
   <nav-pointer rid="tc1" specific-use="pagenum">iii</nav-pointer>
  </toc-entry>
  <toc-entry>
   <title>Executive Summary</title>
   <nav-pointer rid="tc2" specific-use="pagenum">xxi</nav-pointer>
  </toc-entry>

  <toc-div content-type="sections">
   <toc-title-group>
    <title>Mental Health Services</title>
   </toc-title-group>

   <toc-entry>
    <label>Section 1</label>
    <title>Introduction</title>
    <nav-pointer rid="tc3" specific-use="pagenum">1</nav-pointer>
   </toc-entry>
   <toc-entry>
    <label>Section 2</label>
    <title>Mental Health of the Population</title>
    <nav-pointer rid="tc4" specific-use="pagenum">5</nav-pointer>
   </toc-entry>
   <toc-entry>
    <label>Section 3</label>
    <title>Providers and Settings for Mental Health Services</title>
    <nav-pointer rid="tc5" specific-use="pagenum">21</nav-pointer>
   </toc-entry>
   <toc-entry>
    <label>Section 4</label>
    <title>Payers and Payment Mechanisms</title>
    <nav-pointer rid="tc6" specific-use="pagenum">43</nav-pointer>
   </toc-entry>
   <toc-entry>
    <label>Section 5</label>
    <title>States: People, Providers, and Payers</title>
    <nav-pointer rid="tc7" specific-use="pagenum">61</nav-pointer>
   </toc-entry>
   <toc-entry>
    <label>Section 6</label>
    <title>Data Gaps</title>
    <nav-pointer rid="tc8" specific-use="pagenum">81</nav-pointer>
   </toc-entry>
   <toc-entry>
    <label>Section 7</label>
    <title>Tables</title>
    <nav-pointer rid="tc9" specific-use="pagenum">85</nav-pointer>
    <toc-entry>
     <label>7.1</label>
     <title>Mental Health of the Population</title>
     <nav-pointer rid="tc10" specific-use="pagenum">85</nav-pointer>
    </toc-entry>
    <toc-entry>
     <label>7.2</label>
     <title>Providers and Settings for Mental Health Services</title>
     <nav-pointer rid="tc11" specific-use="pagenum">125</nav-pointer>
    </toc-entry>
    <toc-entry>
     <label>7.3</label>
     <title>Payers and Payment Mechanisms</title>
     <nav-pointer rid="tc12" specific-use="pagenum">193</nav-pointer>
    </toc-entry>
    <toc-entry>
     <label>7.4</label>
     <title>States: People, Providers, and Payers</title>
     <nav-pointer rid="tc13" specific-use="pagenum">241</nav-pointer>
    </toc-entry>
    <toc-entry>
     <label>7.5</label>
     <title>References</title>
     <nav-pointer rid="tc14" specific-use="pagenum">335</nav-pointer>
    </toc-entry>
   </toc-entry>
  </toc-div>

  <toc-div content-type="appendices">
   <toc-title-group>
    <title>Appendices</title>
   </toc-title-group>

   <toc-entry>
    <label>Appendix A</label>
    <title>Data Source Descriptions</title>
    <nav-pointer rid="tc15" specific-use="pagenum">339</nav-pointer>
   </toc-entry>
   <toc-entry>
    <label>Appendix B</label>
    <title>Glossary</title>
    <nav-pointer rid="tc16" specific-use="pagenum">343</nav-pointer>
   </toc-entry>
   <toc-entry>
    <label>Appendix C</label>
    <title>Glossary</title>
    <nav-pointer rid="tc17" specific-use="pagenum">347</nav-pointer>
   </toc-entry>
  </toc-div>

 </toc>
</front-matter>
...
Multilevel Table of Contents with empty navigation links (@rids) 
...
<toc-div content-type="sections">
 <toc-title-group>
  <title>Mental Health Services</title>
 </toc-title-group>
 <toc-entry>
   <label>Section 1</label>
   <title>Introduction</title>
   <nav-pointer rid="tc3"/>
 </toc-entry>
<toc-entry>...</toc-entry>
 <toc-entry>
  <label>Section 3</label>
  <title>Providers and Settings for Mental Health Services</title>
  <nav-pointer rid="tc5"/>
  <toc-entry>
   <label>3.1</label>
   <title>Narrative</title>
   <nav-pointer rid="tc5-1"/>
   <toc-entry>
    <label>3.1.1</label>
    <title>Overview</title>
    <nav-pointer rid="tc5-1-1"/>
   </toc-entry>
   <toc-entry>
    <label>3.1.2</label>
    <title>Adult Mental Health Services</title>
    <nav-pointer rid="tc5-1-2"/>
    <toc-entry>
     <title>Mental Health Services</title>
     <nav-pointer rid="tc5-1-2-1"/>
    </toc-entry>
    <toc-entry>
     <title>Nonspecialty Mental Health Services</title>
     <nav-pointer rid="tc5-1-2-2"/>
    </toc-entry>
    <toc-entry>
     <title>Mental Health Service Capacity</title>
     <nav-pointer rid="tc5-1-2-3"/>
    </toc-entry>
   </toc-entry>
   <toc-entry>
    <label>3.1.3</label>
    <title>Child Mental Health Services</title>
    <nav-pointer rid="tc5-1-3"/>
    <toc-entry>
     <title>Specialty Mental Health Services</title>
     <nav-pointer rid="tc5-1-3-1"/>
    </toc-entry>
    <toc-entry>
     <title>Mental Health Service Capacity for Children</title>
     <nav-pointer rid="tc5-1-3-2"/>
    </toc-entry>
   </toc-entry>
   <toc-entry>
    <label>3.1.4</label>
    <title>Special Populations</title>
    <nav-pointer rid="tc5-1-4"/>
   </toc-entry>
  </toc-entry>
  <toc-entry>
   <label>3.2</label>
   <title>Exhibits</title>
   <nav-pointer rid="tc5-2"/>
   ...
  </toc-entry>
  <toc-entry>
   <label>3.3</label>
   <title>References</title>
   <nav-pointer rid="tc5-3"/>
   ...
  </toc-entry>
 </toc-entry>
 ...
</toc-div>...
Multilevel Table of Contents with print page numbers 
...
<toc-div content-type="sections">
 <toc-title-group>
  <title>Mental Health Services</title>
 </toc-title-group>
 ...
 <toc-entry>
  <label>Section 3</label>
  <title>Providers and Settings for Mental Health Services</title>
  <nav-pointer rid="tc5" specific-use="pagenum">21</nav-pointer>
  <toc-entry>
   <label>3.1</label>
   <title>Narrative</title>
   <nav-pointer rid="tc5-1" specific-use="pagenum">21</nav-pointer>
   <toc-entry>
    <label>3.1.1</label>
    <title>Overview</title>
    <nav-pointer rid="tc5-1-1" specific-use="pagenum">21</nav-pointer>
   </toc-entry>
   <toc-entry>
    <label>3.1.2</label>
    <title>Adult Mental Health Services</title>
    <nav-pointer rid="tc5-1-2" specific-use="pagenum">21</nav-pointer>
    <toc-entry>
     <title>Mental Health Services</title>
     <nav-pointer rid="tc5-1-2-1" specific-use="pagenum">21</nav-pointer>
    </toc-entry>
    <toc-entry>
     <title>Nonspecialty Mental Health Services</title>
     <nav-pointer rid="tc5-1-2-2" specific-use="pagenum">22</nav-pointer>
    </toc-entry>
    <toc-entry>
     <title>Mental Health Service Capacity</title>
     <nav-pointer rid="tc5-1-2-3" specific-use="pagenum">23</nav-pointer>
    </toc-entry>
   </toc-entry>
   <toc-entry>
    <label>3.1.3</label>
    <title>Child Mental Health Services</title>
    <nav-pointer rid="tc5-1-3" specific-use="pagenum">23</nav-pointer>
    <toc-entry>
     <title>Specialty Mental Health Services</title>
     <nav-pointer rid="tc5-1-3-1" specific-use="pagenum">24</nav-pointer>
    </toc-entry>
    <toc-entry>
     <title>Mental Health Service Capacity for Children</title>
     <nav-pointer rid="tc5-1-3-2" specific-use="pagenum">24</nav-pointer>
    </toc-entry>
   </toc-entry>
   <toc-entry>
    <label>3.1.4</label>
    <title>Special Populations</title>
    <nav-pointer rid="tc5-1-4" specific-use="pagenum">23</nav-pointer>
   </toc-entry>
  </toc-entry>
  <toc-entry>
   <label>3.2</label>
   <title>Exhibits</title>
   <nav-pointer rid="tc5-2" specific-use="pagenum">25</nav-pointer>
   ...
  </toc-entry>
  <toc-entry>
   <label>3.3</label>
   <title>References</title>
   <nav-pointer rid="tc5-3" specific-use="pagenum">42</nav-pointer>
   ...
  </toc-entry>
 </toc-entry>
 ...
</toc-div>
...
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