Example: DITA map that references a subordinate map

This example illustrates how one map can reference a subordinate map using either <mapref> or the basic <topicref> element.

The following code sample illustrates how a DITA map can use the specialized <mapref> element to reference another DITA map:

<map>
  <title>DITA work at OASIS</title>
  <topicref href="oasis-dita-technical-committees.dita">
    <topicref href="dita_technical_committee.dita"/>
    <topicref href="dita_adoption_technical_committee.dita"/>
  </topicref>
  <mapref href="oasis-processes.ditamap"/>
  <!-- ... -->
</map>

The <mapref> element is a specialized <topicref> intended to make it easier to reference another map; use of <mapref> is not required for this task. This map also could be tagged in the following way:

<map>
  <title>DITA work at OASIS</title>
  <topicref href="oasis-dita-technical-committees.dita">
    <topicref href="dita_technical_committee.dita"/>
    <topicref href="dita_adoption_technical_committee.dita"/>
  </topicref>
<topicref href="oasis-processes.ditamap" format="ditamap"/>
<!-- ... -->
</map>

With either of the above examples, during processing, the map is resolved in the following way:

<map>
  <title>DITA work at OASIS</title>
  <topicref href="oasis-dita-technical-committees.dita">
    <topicref href="dita_technical_committee.dita"/>
    <topicref href="dita_adoption_technical_committee.dita"/>
  </topicref>
  <!-- Contents of the oasis-processes.ditamap file -->
  <topicref href="oasis-processes.dita">
    <!-- ... -->
  </topicref>
  <!-- ... -->
</map>