The <anchor> element provides an integration point that another map can reference in order to insert its navigation into the current navigation tree. For those familiar with Eclipse help systems, this serves the same purpose as the <anchor> element in that system. It may not be supported for all output formats.

The <anchor> element is typically used to allow integration of run-time components. For build-time integration, you can instead use the conref or conkeyref attribute on an element inside the map. For example, a <topicref> element may use conref to pull in content at build-time from a <topicref> in another map.


Note: These models represent only the default document types distributed by OASIS. Actual content models will differ with each new document type.
Doctype Content model
map, bookmap, classifyMap, subjectScheme, learningBookmap, learningMap no content

Contained by

Doctype Content model
map (base), map (technical content), bookmap, classifyMap, learningBookmap, learningMap map, topicref, topichead, topicgroup, topicset, keydef
subjectScheme map, topicref, subjectScheme, topichead, topicgroup, topicset, keydef


- map/anchor


In this example, an anchor is defined with an ID of "a1".
  <title>MyComponent tasks</title>
  <topicref navtitle="Start here" href="start.dita" toc="yes">
    <navref mapref="othermap2.ditamap"/>
    <navref mapref="othermap3.ditamap"/>
    <anchor id="a1"/>
The id on <anchor> can be referenced by the anchorref attribute on another map's <map> element. For example, the map to be integrated at that spot would be defined as follows.
<map anchorref="a1">
  <title>This map is pulled into the MyComponent task map</title>


Name Description Data Type Default Value Required?
id Provides an integration point that another map may reference in order to insert its navigation into the current navigation tree. The anchorref attribute on a map may be used to reference this attribute. See ID attribute in the Architectural Specification for more details. NMTOKEN #REQUIRED Yes
conref This attribute is used to reference an ID on content that can be reused. See The conref attribute for examples and details about the syntax. CDATA #IMPLIED No
select-atts attribute group (props, base, platform, product, audience, otherprops, importance, rev, status) A set of related attributes, described in select-atts attribute group      
localization-atts attribute group (translate, xml:lang, dir) A set of related attributes, described in localization-atts attribute group.      
global-atts attribute group (xtrf, xtrc) A set of related attributes, described in global-atts attribute group      
class, outputclass Common attributes described in Other common DITA attributes      

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OASIS DITA Version 1.2 -- OASIS Standard, 1 December 2010
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