The <defaultSubject> element is used within an attribute enumeration to set the default value for that attribute in cases where no value is specified on the attribute. The default subject must be one of the controlled values within the categories specified for the attribute.
| Doctype | Content model |
|---|---|
| subjectScheme | ( (data or data-about) (any number) ) |
The following example declares that each of the four defined "os" values is valid within the platform attribute; if no value is specified, the default is "linux".
<subjectScheme>
<subjectdef keys="os">
<subjectdef keys="linux"/>
<subjectdef keys="mswin"/>
<subjectdef keys="zos"/>
<subjectdef keys="macos"/>
</subjectdef>
<enumerationdef>
<attributedef name="platform"/>
<defaultSubject keyref="linux"/>
<subjectdef keyref="os"/>
</enumerationdef>
</subjectScheme>
| Name | Description | Data Type | Default Value | Required? |
|---|---|---|---|---|
| navtitle | Specifies the title of the topic as it will appear in the navigation or tables of contents that are generated from the map. Beginning with DITA 1.2, the preferred way to specify the navigation title in a map is with the navtitle element, available inside the topicmeta element. | CDATA | #IMPLIED | No |
| href | A pointer to the resource represented by the <topicref>. See The href attribute for detailed information on supported values and processing implications. References to DITA content cannot be below the topic level: that is, you cannot reference individual elements inside a topic. References to content other than DITA topics should use the format attribute to identify the kind of resource being referenced. | CDATA | #IMPLIED | No |
| keys | Introduces one or more global identifiers for a resource referenced from a map. See The keys attribute for details on how to use the keys attribute. | NMTOKEN | #IMPLIED | No |
| processing-role | Describes the processing role of the referenced topic. The
processing default is "normal". If the value is not specified locally,
but is specified on an ancestor, the value will cascade from the
closest ancestor.
|
(normal | resource-only | -dita-use-conref-target) | #IMPLIED | No |
| query | This attribute is deprecated. It may be removed in the future. | CDATA | #IMPLIED | No |
| copy-to | Use the copy-to attribute on the <topicref>
element to provide a different file name for a particular instance
of the topic in the map (for example, to separate out the different
versions of the topic, rather than combining them on output). The
links and navigation associated with that instance will point to a
copy of the topic with the file name you specified. Use the <linktext> and <shortdesc> in the <topicref>'s <topicmeta> to provide a unique name and short description for the new copy. |
CDATA | #IMPLIED | No |
| type | Describes the target of a reference. See The type attribute for detailed information on supported values and processing implications. | CDATA | #IMPLIED | No |
| scope | The scope attribute identifies the closeness of the relationship between the current document and the target resource. See The scope attribute for more information on values. | (local | peer | external | -dita-use-conref-target) | #IMPLIED | No |
| locktitle | This attribute makes sure the navtitle element or attribute is used if it is present.
If locktitle isn't set
to "yes", the navtitle is ignored and text is retrieved from the
target.
|
(yes | no | -dita-use-conref-target) | #IMPLIED | No |
| format | The format attribute identifies the format of the resource being referenced. See The format attribute for details on supported values. | CDATA | #IMPLIED | No |
| toc | Specifies whether a topic appears in the table of contents (TOC). If the value is not specified locally, but is specified on an ancestor, the value will cascade from the closest ancestor. | (yes | no | -dita-use-conref-target) | #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, outputclass, keyref | Keyref provides a redirectable reference based on a key defined within a map. See The keyref attribute for information on using this attribute. Class and outputclass are described in Other common DITA attributes |
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DITA v1.2 CD 03
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