Example: DITA map with a simple relationship table
This example illustrates how to interpret a basic three-column relationship table
         used
         to maintain links between concept, task, and reference material.
      
      The following example contains the markup for a simple relationship table:
<map>
<!-- ... -->
<reltable>
  <relheader>
    <relcolspec type="concept"/>
    <relcolspec type="task"/>
    <relcolspec type="reference"/>
  </relheader>
  <relrow>
    <relcell>
      <topicref href="A.dita"/>
    </relcell>
    <relcell>
      <topicref href="B.dita"/>
    </relcell>
    <relcell>
      <topicref href="C1.dita"/>
      <topicref href="C2.dita"/>
    </relcell>
  </relrow>
</reltable>
</map>A DITA-aware tool might represent the relationship table graphically:
| type="concept" | type="task" | type="reference" | 
|---|---|---|
| A | B | 
                     C1 C2  | 
               
When the output is generated, the topics contain the following linkage:
- A
 - Links to B, C1, and C2
 - B
 - Links to A, C1, and C2
 - C1, C2
 - Links to A and B