An <index-see-also> element within an <indexterm> redirects the reader to another index entry that the reader should reference in addition to the current one.
The <index-see> and <index-see-also> elements allow a form of redirection to another index entry within the generated index. The <index-see> element refers to an index entry that the reader should use instead of the current one, whereas the <index-see-also> element refers to an index entry that the reader should use in addition to the current one.
The <index-see> and <index-see-also> elements are ignored if their parent indexterm element contains any indexterm children.
In addition to its "see also" redirection, an index-see-also functions as a pointwise indexterm, thereby typically generating a page reference as well as the "see also" indication.
It is not an error for there to be multiple index-see-also elements for a single index entry.
| Doctype | Content model |
|---|---|
| topic (base), map (base), classifyMap, learningAssessment, learningBookmap, learningContent, learningMap, learningOverview, learningPlan, learningSummary | ( text data or data or data-about or foreign or unknown or keyword or term or indexterm) (any number) |
| topic (technical content), map (technical content), concept, ditabase, glossary, glossentry, glossgroup, reference, task, bookmap | ( text data or data or data-about or foreign or unknown or keyword or apiname or option or parmname or cmdname or msgnum or varname or wintitle or term or abbreviated-form or indexterm) (any number) |
| machineryTask | ( text data or data or data-about or foreign or unknown or keyword or wintitle or term or indexterm) (any number) |
| Doctype | Content model |
|---|---|
| topic (base), map (base), topic (technical content), map (technical content), concept, ditabase, glossary, glossentry, glossgroup, reference, task (strict), task (general), bookmap, classifyMap, machineryTask, learningAssessment, learningBookmap, learningContent, learningMap, learningOverview, learningPlan, learningSummary | indexterm |
The following example illustrates the use of an <index-see-also> redirection element within an <indexterm>:
<indexterm>Carp <index-see-also>Goldfish</index-see-also> </indexterm>
The following example illustrates the use of an <index-see-also> redirection element to a more complex (multilevel) <indexterm>:
<indexterm>Feeding <index-see-also>Goldfish <indexterm>feeding</indexterm></index-see-also> </indexterm>
This is part of the indexing markup that might generate index entries such as:
| Name | Description | Data Type | Default Value | Required? |
|---|---|---|---|---|
| keyref | Keyref provides a redirectable reference based on a key defined within a map. See The keyref attribute for information on using this attribute. | CDATA | #IMPLIED | No |
| univ-atts attribute group (includes select-atts, id-atts, and localization-atts groups) | A set of related attributes, described in univ-atts attribute group | |||
| global-atts attribute group (xtrf, xtrc) | A set of related attributes, described in global-atts attribute group | |||
| class | A common attribute described in Other common DITA attributes |
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