<topicgroup>
The <topicgroup>
element groups <topicref>
elements
for common treatment without affecting the structural hierarchy of the map, as opposed to
nesting <topicref>
elements, which does imply a structural hierarchy.
The <topicgroup>
element can provide linking relationships and shared,
inherited attributes to the set of elements that it contains without affecting the
resulting table of contents or navigation.
Category: Map group elements