###### 3.1.5.1.12 subjectHead

The <subjectHead> element provides a heading for a group of subjects, for use if the scheme is displayed. For instance, a scheme may be displayed to let a user select subjects as part of faceted browsing. The subjectHead element itself does not reference a file and cannot be referenced as a key, so it does not define any controlled values.

###### Contains

Doctype | Content model
subjectScheme | ( (subjectHeadMeta) (optional) then (data or data-about or subjectdef or subjectHead or topicref or (anchorref or keydef or mapref or topicgroup or topichead or topicset or topicsetref) ) (any number) )

###### Contained by

Doctype | Content model
subjectScheme | subjectScheme, hasNarrower, hasKind, hasPart, hasInstance, hasRelated, subjectdef, subjectHead

###### Inheritance

- map/topicref subjectScheme/subjectHead

###### Example

In this example the “Server setup” label doesn't classify content but, when selected, is equivalent to the union of its child subjects. That is, the heading covers content about planning for any application, installing for any application, any task for web servers, or any task for database servers.

    <subjectScheme toc="yes" search="no">
      ...
      <subjectHead>
        <subjectHeadMeta>
          <navtitle>Server setup</navtitle>
        </subjectHeadMeta>
        <subjectdef href="planningTaskType.dita"/>
        <subjectdef href="installingTaskType.dita"/>
        <subjectdef href="webServerApp.dita"/>
        <subjectdef href="databaseApp.dita"/>
      </subjectHead>
      ...
    </subjectScheme>

###### Attributes

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
collection-type | Collection types describe how links relate to each other. The processing default is "unordered", although no default is specified in the DTD or Schema. unordered Indicates that the order of the child topics is not significant. sequence Indicates that the order of the child topics is significant; output processors will typically link between them in order. | (unordered | sequence | -dita-use-​conref-​target) | #IMPLIED | No
linking | Defines some specific linking characteristics of subject topics. "normal" is the only valid value, and is specified as the default in the DTD and Schema. When attribute values cascade, this causes a linking value of "normal" to cascade to the subjects. | (normal) | normal | No
processing-role | Describes the processing role of the referenced topic. The processing default is "normal". normal Normal topic that is a readable part of the information. resource-only The topic is used as a resource for processing purposes, but is not a readable unit of information on its own. This topic should not be included in a rendered table of contents, and the topic should not be rendered on its own. | (normal | resource-only | -dita-use-​conref-​target) | #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 3.4.1.3 univ-atts attribute group |  |  |
global-atts attribute group (xtrf, xtrc) | A set of related attributes, described in 3.4.1.2 global-atts attribute group |  |  |
class, outputclass | Common attributes described in 3.4.1.9 Other common DITA attributes |  |  |

Previous Topic: 3.1.5.1.11 defaultSubject

Next Topic: 3.1.5.1.13 subjectHeadMeta

Parent Topic: 3.1.5.1 Subject scheme maps

Sibling Topics:

3.1.5.1.1 subjectScheme

3.1.5.1.2 schemeref

3.1.5.1.3 hasInstance

3.1.5.1.4 hasKind

3.1.5.1.5 hasNarrower

3.1.5.1.6 hasPart

3.1.5.1.7 hasRelated

3.1.5.1.8 enumerationdef

3.1.5.1.9 elementdef

3.1.5.1.10 attributedef

3.1.5.1.11 defaultSubject

3.1.5.1.13 subjectHeadMeta

3.1.5.1.14 subjectdef

3.1.5.1.15 relatedSubjects

3.1.5.1.16 subjectRelTable

3.1.5.1.17 subjectRelHeader

3.1.5.1.18 subjectRel

3.1.5.1.19 subjectRole