<index-base>The <index-base> element allows indexing extensions to be added by
specializing this element.
The <index-base> element can only exist as a child of an
<indexterm> element. This characteristic makes it the appropriate
element to specialize to add indexing extensions. For example, the <index-see>, <index-see-also>, and <index-sort-as> elements only make
sense as children of <indexterm> and so are specializations of
<index-base>. Those elements are all part of the indexing domain.
On its own, <index-base> has no meaning. Processors should ignore this
element and its content if encountered in its unspecialized form.
See appendix for information about this element in OASIS document type shells.
- topic/index-base
This element is not intended to be used in source files.
The <index-see-also> element is specialized from
<index-base>; see index-see-also for an example
of how <index-base>
can be used with specialization.
The following attributes are available on this element: Universal attribute group and @keyref.