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<index-term> Index Term

The index term to be embedded into the narrative of an article so that an Index can be created programmatically.

Usage/Remarks

Embedded index terms are more frequently a feature of books than they are of journal articles, but some publishers are now placing index terms in the text of a journal article so that both issue indexes and online article indexes can be made.
Structure of an Index Term
Index entries are recursive, so if a category (“drinks”) contains a sub-category (“lemonade”), the category <index-term> will contain two components:
  • its own <term> (“drinks”), and
  • an <index-term> for the sub-category. This subordinate index term will contain its own <term> (“lemonade”). 
<index-term>
 <term>drinks</term>
 <index-term>
  <term>lemonade</term>
 </index-term>
</index-term>
Terms Points and Term Ranges
An <index-term> is either a single target point or the start of an index range. When it is the start of a range, an @id attribute is required, so that the <index-term-range-end> element can point to the start of the range.
Attributes
content-type
index-type
sort-key
specific-use
vocab
vocab-identifier
vocab-term
vocab-term-identifier

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
<addr-line>, <alt-title>, <article-title>, <attrib>, <award-id>, <bold>, <code>, <collab>, <comment>, <conf-theme>, <def-head>, <element-citation>, <fixed-case>, <funding-source>, <index-term>, <italic>, <license-p>, <meta-value>, <mixed-citation>, <monospace>, <named-content>, <overline>, <p>, <preformat>, <product>, <roman>, <sans-serif>, <sc>, <see>, <see-also>, <strike>, <styled-content>, <sub>, <subtitle>, <sup>, <supplement>, <support-source>, <td>, <term>, <term-head>, <th>, <title>, <trans-subtitle>, <trans-title>, <underline>, <verse-line>
Description
The following, in order:
Content Model
<!ELEMENT index-term    %index-term-model;                           >
Expanded Content Model

(term, (index-term | (see | see-also)*))

Tagged Samples
In <p> with <see-also> 
... 
<p>However, the First Amendment does not bar the 
 issuance or execution of a warrant to search a 
 newsroom<index-term><term>Newspapers</term>
 <see-also><index-term><term>Speech and press</term>
 </index-term></see-also></index-term> to obtain 
 photographs of demonstrators who had injured several 
 policemen, although the Court appeared ...</p>
...
In <title> with <see> 
...
<sec id="sec10-3-3">
 <title>United States Interstate Compacts<index-term id="idx313">
  <term>Interstate compacts</term>
  <see><index-term><term>States, Agreements with other States</term>
   </index-term></see>
  </index-term></title>
 <p>For many years after the United States Constitution was adopted, boundary 
  disputes continued to predominate as the subject matter of agreements 
  among the States.  Since the turn of the twentieth century, however, the 
  interstate compact has been used to an increasing extent as an instrument 
  for state cooperation ...</p>
 ...
</sec>
...
Using vocabulary attributes 
... 
<p>Fu attribuito prevalentemente ad 
 Aristotele<index-term index-type="person" id="idx108">
  <term 
    vocab-term-identifier="http://xmlns.com/foaf/spec/#term_Person"
   >Aristotle</term>
  <see><index-term><term>Aristoteles</term></index-term>
  </see>
 </index-term>, anche se l&rsquo;origine avicenniana era 
 tramandata dalle sottoscrizioni di parecchi manoscritti e nota a commentatori 
 come ad esempio Adamo di Bockenfield<index-term index-type="person" id="idx903">
  <term 
    vocab-term-identifier="http://xmlns.com/foaf/spec/#term_Person"
   >Adamo di Bockenfield</term>
  <see-also><index-term><term>Adam de Bocfeld</term></index-term>
  </see-also>
  <see-also><index-term><term>Adam Bockenfield</term></index-term>
  </see-also>
 </index-term></p>
...
Multi-level index term 
... 
<p>Almost from the beginning, the history of Romanesque art and 
 architecture<index-term index-type="subject">
  <term>architecture</term>
  <index-term index-type="subject">
   <term>Romanesque (historiography)</term>
  </index-term>
 </index-term> was linked to the intercourse and growth 
 generated by movement along the roads to the shrine of 
 St. James at Compostela.</p>
...
Deeply nested multi-level index term 
...
<p>This is a paragraph with indexing throughout.  For example, it 
 shows primary index terms<index-term><term>primary level index 
 term</term></index-term>, and then continues with embedded 
 index terms such as this one.
 <index-term><term>primary level index term</term>
   <index-term><term>secondary term</term></index-term>
 </index-term> as the text continues.</p>

<p>Now that you see how it works, this paragraph is slightly 
 more realistic.  It talks about Poodles, for example, <index-term>
 <term>poodle</term></index-term>, and then continues on 
 with other embedded index terms such as this 2-level one.
 <index-term><term>dogs</term>
   <index-term><term>poodles</term></index-term>
 </index-term> The text continues, if necessary.</p>

<p>Finally, as an illustration, this is a very complex, multilevel 
 index term
 <index-term>
   <term>primary term</term>
   <index-term>
     <term>secondary term</term>
     <index-term>
       <term>tertiary term</term>
       <index-term>
         <term>4th level down</term>
         <index-term>
           <term>5th and out</term>
           <see>a lessor, <index-term><term>non-preferred term</term>
            </index-term></see>
           <see-also>Be advised you might want to look 
            at this <index-term><term>color-term</term>
            </index-term>.</see-also>
         </index-term>
       </index-term>
     </index-term>
   </index-term>
 </index-term> inside the text of an ordinary paragraph.
 Or placed at the end of the paragraph, if that seems
 more reasonable.</p>
...
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