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Chapter 1: Introduction to DITA 1.3
- 1.1.1: About the DITA specification: Technical content edition
- 1.1.2: Terminology
- 1.1.3: Normative references
- 1.1.4: Non-normative references
- 1.1.5: Formatting conventions in the XHTML version of the specification
Chapter 2: Architectural specification: Technical content edition
- 2.2.1: Introduction to DITA
  - 2.2.1.1: DITA terminology and notation
  - 2.2.1.2: Basic concepts
  - 2.2.1.3: File extensions
  - 2.2.1.4: Producing different deliverables from a single source
- 2.2.2: DITA markup
  - 2.2.2.1: DITA topics
    - 2.2.2.1.1: The topic as the basic unit of information
    - 2.2.2.1.2: The benefits of a topic-based architecture
    - 2.2.2.1.3: Disciplined, topic-oriented writing
    - 2.2.2.1.4: Information typing
    - 2.2.2.1.5: Generic topics
    - 2.2.2.1.6: Topic structure
    - 2.2.2.1.7: Topic content
  - 2.2.2.2: DITA maps
    - 2.2.2.2.1: Definition of DITA maps
    - 2.2.2.2.2: Purpose of DITA maps
    - 2.2.2.2.3: DITA map elements
    - 2.2.2.2.4: DITA map attributes
    - 2.2.2.2.5: Examples of DITA maps
      - 2.2.2.2.5.1: Example: DITA map that references a subordinate map
      - 2.2.2.2.5.2: Example: DITA map with a simple relationship table
      - 2.2.2.2.5.3: Example: How the @collection-type and @linking attributes determine links
      - 2.2.2.2.5.4: Example: How the @cascade attribute functions
  - 2.2.2.3: Subject scheme maps and their usage
    - 2.2.2.3.1: Subject scheme maps
    - 2.2.2.3.2: Defining controlled values for attributes
    - 2.2.2.3.3: Binding controlled values to an attribute
    - 2.2.2.3.4: Processing controlled attribute values
    - 2.2.2.3.5: Extending subject schemes
    - 2.2.2.3.6: Scaling a list of controlled values to define a taxonomy
    - 2.2.2.3.7: Classification maps
    - 2.2.2.3.8: Examples of subject scheme maps
      - 2.2.2.3.8.1: Example: How hierarchies defined in a subject scheme map affect filtering
      - 2.2.2.3.8.2: Example: Extending a subject scheme
      - 2.2.2.3.8.3: Example: Extending a subject scheme upwards
      - 2.2.2.3.8.4: Example: Defining values for @deliveryTarget
  - 2.2.2.4: DITA metadata
    - 2.2.2.4.1: Metadata elements
    - 2.2.2.4.2: Metadata attributes
      - 2.2.2.4.2.1: Conditional processing attributes
      - 2.2.2.4.2.2: Translation and localization attributes
      - 2.2.2.4.2.3: Architectural attributes
    - 2.2.2.4.3: Metadata in maps and topics
    - 2.2.2.4.4: Cascading of metadata attributes in a DITA map
    - 2.2.2.4.5: Reconciling topic and map metadata elements
    - 2.2.2.4.6: Map-to-map cascading behaviors
      - 2.2.2.4.6.1: Cascading of attributes from map to map
      - 2.2.2.4.6.2: Cascading of metadata elements from map to map
      - 2.2.2.4.6.3: Cascading of roles from map to map
    - 2.2.2.4.7: Context hooks and window metadata for user assistance
- 2.2.3: DITA addressing
  - 2.2.3.1: ID attribute
  - 2.2.3.2: DITA linking
  - 2.2.3.3: URI-based (direct) addressing
  - 2.2.3.4: Indirect key-based addressing
    - 2.2.3.4.1: Core concepts for working with keys
    - 2.2.3.4.2: Key scopes
    - 2.2.3.4.3: Using keys for addressing
    - 2.2.3.4.4: Addressing keys across scopes
    - 2.2.3.4.5: Cross-deliverable addressing and linking
    - 2.2.3.4.6: Processing key references
    - 2.2.3.4.7: Processing key references for navigation links and images
    - 2.2.3.4.8: Processing key references on <topicref> elements
    - 2.2.3.4.9: Processing key references to generate text or link text
    - 2.2.3.4.10: Examples of keys
      - 2.2.3.4.10.1: Examples: Key definition
      - 2.2.3.4.10.2: Examples: Key definitions for variable text
      - 2.2.3.4.10.3: Example: Scoped key definitions for variable text
      - 2.2.3.4.10.4: Example: Duplicate key definitions within a single map
      - 2.2.3.4.10.5: Example: Duplicate key definitions across multiple maps
      - 2.2.3.4.10.6: Example: Key definition with key reference
      - 2.2.3.4.10.7: Example: References to scoped keys
      - 2.2.3.4.10.8: Example: Key definitions in nested key scopes
      - 2.2.3.4.10.9: Example: Link redirection
      - 2.2.3.4.10.10: Example: Link modification or removal
      - 2.2.3.4.10.11: Example: Links from <term> or <keyword> elements
      - 2.2.3.4.10.12: Example: conref redirection
      - 2.2.3.4.10.13: Example: Key scopes and omnibus publications
      - 2.2.3.4.10.14: Example: How key scopes affect key precedence
      - 2.2.3.4.10.15: Example: Keys and collaboration
- 2.2.4: DITA processing
  - 2.2.4.1: Navigation
    - 2.2.4.1.1: Table of contents
    - 2.2.4.1.2: Indexes
  - 2.2.4.2: Content reference (conref)
    - 2.2.4.2.1: Conref overview
    - 2.2.4.2.2: Processing conrefs
    - 2.2.4.2.3: Processing attributes when resolving conrefs
    - 2.2.4.2.4: Processing xrefs and conrefs within a conref
  - 2.2.4.3: Conditional processing (profiling)
    - 2.2.4.3.1: Conditional processing values and groups
    - 2.2.4.3.2: Filtering
    - 2.2.4.3.3: Flagging
    - 2.2.4.3.4: Conditional processing to generate multiple deliverable types
    - 2.2.4.3.5: Examples of conditional processing
      - 2.2.4.3.5.1: Example: Setting conditional processing values and groups
      - 2.2.4.3.5.2: Example: Filtering and flagging topic content
  - 2.2.4.4: Branch filtering
    - 2.2.4.4.1: Overview of branch filtering
    - 2.2.4.4.2: Branch filtering: Single condition set for a branch
    - 2.2.4.4.3: Branch filtering: Multiple condition sets for a branch
    - 2.2.4.4.4: Branch filtering: Impact on resource and key names
    - 2.2.4.4.5: Branch filtering: Implications of processing order
    - 2.2.4.4.6: Examples of branch filtering
      - 2.2.4.4.6.1: Example: Single <ditavalref> on a branch
      - 2.2.4.4.6.2: Example: Multiple <ditavalref> elements on a branch
      - 2.2.4.4.6.3: Example: Single <ditavalref> as a child of <map>
      - 2.2.4.4.6.4: Example: Single <ditavalref> in a reference to a map
      - 2.2.4.4.6.5: Example: Multiple <ditavalref> elements as children of <map> in a root map
      - 2.2.4.4.6.6: Example: Multiple <ditavalref> elements in a reference to a map
      - 2.2.4.4.6.7: Example: <ditavalref> within a branch that already uses <ditavalref>
      - 2.2.4.4.6.8: Example: <ditavalref> error conditions
  - 2.2.4.5: Chunking
    - 2.2.4.5.1: Using the @chunk attribute
    - 2.2.4.5.2: Chunking examples
  - 2.2.4.6: Translation and localization
    - 2.2.4.6.1: The @xml:lang attribute
    - 2.2.4.6.2: The @dir attribute
  - 2.2.4.7: Processing documents with different values of the @domains attribute
  - 2.2.4.8: Sorting
- 2.2.5: Configuration, specialization, generalization, and constraints
  - 2.2.5.1: Overview of DITA extension facilities
  - 2.2.5.2: Configuration
    - 2.2.5.2.1: Overview of document-type shells
    - 2.2.5.2.2: Rules for document-type shells
    - 2.2.5.2.3: Equivalence of document-type shells
    - 2.2.5.2.4: Conformance of document-type shells
  - 2.2.5.3: Specialization
    - 2.2.5.3.1: Overview of specialization
    - 2.2.5.3.2: Modularization
    - 2.2.5.3.3: Vocabulary modules
    - 2.2.5.3.4: Specialization rules for element types
    - 2.2.5.3.5: Specialization rules for attributes
    - 2.2.5.3.6: @class attribute rules and syntax
    - 2.2.5.3.7: @domains attribute rules and syntax
    - 2.2.5.3.8: Specializing to include non-DITA content
    - 2.2.5.3.9: Sharing elements across specializations
  - 2.2.5.4: Generalization
    - 2.2.5.4.1: Overview of generalization
    - 2.2.5.4.2: Element generalization
    - 2.2.5.4.3: Processor expectations when generalizing elements
    - 2.2.5.4.4: Attribute generalization
    - 2.2.5.4.5: Generalization with cross-specialization dependencies
  - 2.2.5.5: Constraints
    - 2.2.5.5.1: Overview of constraints
    - 2.2.5.5.2: Constraint rules
    - 2.2.5.5.3: Constraints, processing, and interoperability
    - 2.2.5.5.4: Weak and strong constraints
    - 2.2.5.5.5: Conref compatibility with constraints
    - 2.2.5.5.6: Examples: Constraints
      - 2.2.5.5.6.1: Example: Redefine the content model for the <topic> element
      - 2.2.5.5.6.2: Example: Constrain attributes for the <section> element
      - 2.2.5.5.6.3: Example: Constrain a domain module
      - 2.2.5.5.6.4: Example: Replace a base element with the domain extensions
      - 2.2.5.5.6.5: Example: Apply multiple constraints to a single document-type shell
- 2.2.6: Coding practices for DITA grammar files
  - 2.2.6.1: Recognized XML-document grammar mechanisms
  - 2.2.6.2: Normative versions of DITA grammar files
  - 2.2.6.3: DTD coding requirements
    - 2.2.6.3.1: DTD: Overview of coding requirements
    - 2.2.6.3.2: DTD: Coding requirements for document-type shells
    - 2.2.6.3.3: DTD: Coding requirements for element type declarations
    - 2.2.6.3.4: DTD: Coding requirements for structural modules
    - 2.2.6.3.5: DTD: Coding requirements for element domain modules
    - 2.2.6.3.6: DTD: Coding requirements for attribute domain modules
    - 2.2.6.3.7: DTD: Coding requirements for constraint modules
  - 2.2.6.4: RELAX NG coding requirements
    - 2.2.6.4.1: RELAX NG: Overview of coding requirements
    - 2.2.6.4.2: RELAX NG: Coding requirements for document-type shells
    - 2.2.6.4.3: RELAX NG: Coding requirements for element type declarations
    - 2.2.6.4.4: RELAX NG: Coding requirements for structural modules
    - 2.2.6.4.5: RELAX NG: Coding requirements for element domain modules
    - 2.2.6.4.6: RELAX NG: Coding requirements for attribute domain modules
    - 2.2.6.4.7: RELAX NG: Coding requirements for constraint modules
  - 2.2.6.5: XML Schema coding requirements
    - 2.2.6.5.1: XML Schema: Overview and limitations of coding requirements
    - 2.2.6.5.2: XML Schema: Coding requirements for document-type shells
    - 2.2.6.5.3: XML Schema: Coding requirements for element type declarations
    - 2.2.6.5.4: XML Schema: Coding requirements for structural modules
    - 2.2.6.5.5: XML Schema: Coding requirements for attribute domain modules
    - 2.2.6.5.6: XML Schema: Coding requirements for constraint modules
- 2.2.7: Technical content specializations
  - 2.2.7.1: Technical content: Document types
    - 2.2.7.1.1: Concept topic
    - 2.2.7.1.2: Reference topic
    - 2.2.7.1.3: General task topic
    - 2.2.7.1.4: Task topic (strict task)
    - 2.2.7.1.5: Machinery Task topic
    - 2.2.7.1.6: Troubleshooting topic
    - 2.2.7.1.7: Glossary entry topic
    - 2.2.7.1.8: Glossary group topic
    - 2.2.7.1.9: Bookmap
  - 2.2.7.2: Technical content domains
    - 2.2.7.2.1: The xNAL domain
    - 2.2.7.2.2: xNAL usage guidelines
    - 2.2.7.2.3: MathML and equation domains
    - 2.2.7.2.4: Release management domain
  - 2.2.7.3: Troubleshooting information
Chapter 3: Language reference: Technical content edition
- 3.3.1: Element quick reference
  - 3.3.1.1: Base DITA elements, A to Z
  - 3.3.1.2: Technical content elements, A to Z
- 3.3.2: Topic elements
  - 3.3.2.1: Basic topic elements
    - 3.3.2.1.1: <topic>
    - 3.3.2.1.2: <title>
    - 3.3.2.1.3: <titlealts>
    - 3.3.2.1.4: <searchtitle>
    - 3.3.2.1.5: <navtitle>
    - 3.3.2.1.6: <shortdesc>
    - 3.3.2.1.7: <abstract>
    - 3.3.2.1.8: <body>
    - 3.3.2.1.9: <bodydiv>
    - 3.3.2.1.10: <related-links>
    - 3.3.2.1.11: <dita>
  - 3.3.2.2: Body elements
    - 3.3.2.2.1: <alt>
    - 3.3.2.2.2: <cite>
    - 3.3.2.2.3: <dd>
    - 3.3.2.2.4: <desc>
    - 3.3.2.2.5: <ddhd>
    - 3.3.2.2.6: <div>
    - 3.3.2.2.7: <dl>
    - 3.3.2.2.8: <dlentry>
    - 3.3.2.2.9: <dlhead>
    - 3.3.2.2.10: <dt>
    - 3.3.2.2.11: <draft-comment>
    - 3.3.2.2.12: <dthd>
    - 3.3.2.2.13: <example>
    - 3.3.2.2.14: <fig>
    - 3.3.2.2.15: <figgroup>
    - 3.3.2.2.16: <fn>
    - 3.3.2.2.17: <image>
    - 3.3.2.2.18: <keyword>
    - 3.3.2.2.19: <li>
    - 3.3.2.2.20: <lines>
    - 3.3.2.2.21: <longdescref>
    - 3.3.2.2.22: <longquoteref>
    - 3.3.2.2.23: <lq>
    - 3.3.2.2.24: <note>
    - 3.3.2.2.25: <object>
    - 3.3.2.2.26: <ol>
    - 3.3.2.2.27: <p>
    - 3.3.2.2.28: <param>
    - 3.3.2.2.29: <ph>
    - 3.3.2.2.30: <pre>
    - 3.3.2.2.31: <q>
    - 3.3.2.2.32: <section>
    - 3.3.2.2.33: <sectiondiv>
    - 3.3.2.2.34: <sl>
    - 3.3.2.2.35: <sli>
    - 3.3.2.2.36: <term>
    - 3.3.2.2.37: <text>
    - 3.3.2.2.38: <tm>
    - 3.3.2.2.39: <ul>
    - 3.3.2.2.40: <xref>
  - 3.3.2.3: Table elements
    - 3.3.2.3.1: <table>
    - 3.3.2.3.2: <tgroup>
    - 3.3.2.3.3: <colspec>
    - 3.3.2.3.4: <thead>
    - 3.3.2.3.5: <tbody>
    - 3.3.2.3.6: <row>
    - 3.3.2.3.7: <entry>
    - 3.3.2.3.8: <simpletable>
    - 3.3.2.3.9: <sthead>
    - 3.3.2.3.10: <strow>
    - 3.3.2.3.11: <stentry>
  - 3.3.2.4: Related links elements
    - 3.3.2.4.1: <link>
    - 3.3.2.4.2: <linklist>
    - 3.3.2.4.3: <linkpool>
    - 3.3.2.4.4: <linktext>
    - 3.3.2.4.5: <linkinfo>
- 3.3.3: Map elements
  - 3.3.3.1: Basic map elements
    - 3.3.3.1.1: <map>
    - 3.3.3.1.2: <topicref>
    - 3.3.3.1.3: <topicmeta>
    - 3.3.3.1.4: <anchor>
    - 3.3.3.1.5: <navref>
    - 3.3.3.1.6: <reltable>
    - 3.3.3.1.7: <relrow>
    - 3.3.3.1.8: <relcell>
    - 3.3.3.1.9: <relheader>
    - 3.3.3.1.10: <relcolspec>
    - 3.3.3.1.11: <ux-window>
  - 3.3.3.2: Map group elements
    - 3.3.3.2.1: <anchorref>
    - 3.3.3.2.2: <keydef>
    - 3.3.3.2.3: <mapref>
    - 3.3.3.2.4: <topicgroup>
    - 3.3.3.2.5: <topichead>
    - 3.3.3.2.6: <topicset>
    - 3.3.3.2.7: <topicsetref>
- 3.3.4: Metadata elements
  - 3.3.4.1: Prolog (metadata) elements
    - 3.3.4.1.1: <prolog>
    - 3.3.4.1.2: <audience>
    - 3.3.4.1.3: <author>
    - 3.3.4.1.4: <brand>
    - 3.3.4.1.5: <category>
    - 3.3.4.1.6: <component>
    - 3.3.4.1.7: <copyright>
    - 3.3.4.1.8: <copyrholder>
    - 3.3.4.1.9: <copyryear>
    - 3.3.4.1.10: <created>
    - 3.3.4.1.11: <critdates>
    - 3.3.4.1.12: <featnum>
    - 3.3.4.1.13: <keywords>
    - 3.3.4.1.14: <metadata>
    - 3.3.4.1.15: <othermeta>
    - 3.3.4.1.16: <permissions>
    - 3.3.4.1.17: <platform>
    - 3.3.4.1.18: <prodinfo>
    - 3.3.4.1.19: <prodname>
    - 3.3.4.1.20: <prognum>
    - 3.3.4.1.21: <publisher>
    - 3.3.4.1.22: <resourceid>
    - 3.3.4.1.23: <revised>
    - 3.3.4.1.24: <series>
    - 3.3.4.1.25: <source>
    - 3.3.4.1.26: <vrmlist>
    - 3.3.4.1.27: <vrm>
  - 3.3.4.2: Indexing group elements
    - 3.3.4.2.1: <indexterm>
    - 3.3.4.2.2: <indextermref>
    - 3.3.4.2.3: <index-see>
    - 3.3.4.2.4: <index-see-also>
    - 3.3.4.2.5: <index-sort-as>
  - 3.3.4.3: Delayed conref resolution elements
    - 3.3.4.3.1: <exportanchors>
    - 3.3.4.3.2: <anchorid>
    - 3.3.4.3.3: <anchorkey>
- 3.3.5: Domain elements
  - 3.3.5.1: Hazard statement elements
    - 3.3.5.1.1: <hazardstatement>
    - 3.3.5.1.2: <consequence>
    - 3.3.5.1.3: <hazardsymbol>
    - 3.3.5.1.4: <howtoavoid>
    - 3.3.5.1.5: <messagepanel>
    - 3.3.5.1.6: <typeofhazard>
  - 3.3.5.2: Highlighting elements
    - 3.3.5.2.1: <b>
    - 3.3.5.2.2: <i>
    - 3.3.5.2.3: <sup>
    - 3.3.5.2.4: <sub>
    - 3.3.5.2.5: <tt>
    - 3.3.5.2.6: <u>
    - 3.3.5.2.7: <line-through>
    - 3.3.5.2.8: <overline>
  - 3.3.5.3: Utilities elements
    - 3.3.5.3.1: <area>
    - 3.3.5.3.2: <coords>
    - 3.3.5.3.3: <imagemap>
    - 3.3.5.3.4: <shape>
    - 3.3.5.3.5: <sort-as>
  - 3.3.5.4: DITAVAL reference domain
    - 3.3.5.4.1: <ditavalref>
    - 3.3.5.4.2: <ditavalmeta>
    - 3.3.5.4.3: <dvrResourcePrefix>
    - 3.3.5.4.4: <dvrResourceSuffix>
    - 3.3.5.4.5: <dvrKeyscopePrefix>
    - 3.3.5.4.6: <dvrKeyscopeSuffix>
- 3.3.6: Classification elements
  - 3.3.6.1: Subject scheme elements
    - 3.3.6.1.1: <subjectScheme>
    - 3.3.6.1.2: <schemeref>
    - 3.3.6.1.3: <hasInstance>
    - 3.3.6.1.4: <hasKind>
    - 3.3.6.1.5: <hasNarrower>
    - 3.3.6.1.6: <hasPart>
    - 3.3.6.1.7: <hasRelated>
    - 3.3.6.1.8: <enumerationdef>
    - 3.3.6.1.9: <elementdef>
    - 3.3.6.1.10: <attributedef>
    - 3.3.6.1.11: <defaultSubject>
    - 3.3.6.1.12: <subjectHead>
    - 3.3.6.1.13: <subjectHeadMeta>
    - 3.3.6.1.14: <subjectdef>
    - 3.3.6.1.15: <relatedSubjects>
    - 3.3.6.1.16: <subjectRelTable>
    - 3.3.6.1.17: <subjectRelHeader>
    - 3.3.6.1.18: <subjectRel>
    - 3.3.6.1.19: <subjectRole>
  - 3.3.6.2: Classification domain elements
    - 3.3.6.2.1: <subjectref>
    - 3.3.6.2.2: <topicapply>
    - 3.3.6.2.3: <topicsubject>
    - 3.3.6.2.4: <topicSubjectTable>
    - 3.3.6.2.5: <topicSubjectHeader>
    - 3.3.6.2.6: <topicSubjectRow>
    - 3.3.6.2.7: <topicCell>
    - 3.3.6.2.8: <subjectCell>
- 3.3.7: Specialization elements
  - 3.3.7.1: <boolean>
  - 3.3.7.2: <data>
  - 3.3.7.3: <data-about>
  - 3.3.7.4: <foreign>
  - 3.3.7.5: <index-base>
  - 3.3.7.6: <itemgroup>
  - 3.3.7.7: <no-topic-nesting>
  - 3.3.7.8: <state>
  - 3.3.7.9: <unknown>
- 3.3.8: Legacy conversion elements
  - 3.3.8.1: <required-cleanup>
- 3.3.9: DITAVAL elements
  - 3.3.9.1: <val>
  - 3.3.9.2: <style-conflict>
  - 3.3.9.3: <prop>
  - 3.3.9.4: <revprop>
  - 3.3.9.5: <startflag>
  - 3.3.9.6: <endflag>
  - 3.3.9.7: <alt-text>
- 3.3.10: Concept elements
  - 3.3.10.1: <concept>
  - 3.3.10.2: <conbody>
  - 3.3.10.3: <conbodydiv>
- 3.3.11: Task elements
  - 3.3.11.1: <task>
  - 3.3.11.2: <taskbody>
  - 3.3.11.3: <prereq>
  - 3.3.11.4: <context>
  - 3.3.11.5: <steps>
  - 3.3.11.6: <steps-informal>
  - 3.3.11.7: <steps-unordered>
  - 3.3.11.8: <step>
  - 3.3.11.9: <stepsection>
  - 3.3.11.10: <cmd>
  - 3.3.11.11: <info>
  - 3.3.11.12: <substeps>
  - 3.3.11.13: <substep>
  - 3.3.11.14: <stepxmp>
  - 3.3.11.15: <choicetable>
  - 3.3.11.16: <chhead>
  - 3.3.11.17: <choptionhd>
  - 3.3.11.18: <chdeschd>
  - 3.3.11.19: <chrow>
  - 3.3.11.20: <choption>
  - 3.3.11.21: <chdesc>
  - 3.3.11.22: <choices>
  - 3.3.11.23: <choice>
  - 3.3.11.24: <steptroubleshooting>
  - 3.3.11.25: <stepresult>
  - 3.3.11.26: <tutorialinfo>
  - 3.3.11.27: <tasktroubleshooting>
  - 3.3.11.28: <result>
  - 3.3.11.29: <postreq>
- 3.3.12: Reference elements
  - 3.3.12.1: <reference>
  - 3.3.12.2: <refbody>
  - 3.3.12.3: <refbodydiv>
  - 3.3.12.4: <refsyn>
  - 3.3.12.5: <properties>
  - 3.3.12.6: <prophead>
  - 3.3.12.7: <proptypehd>
  - 3.3.12.8: <propvaluehd>
  - 3.3.12.9: <propdeschd>
  - 3.3.12.10: <property>
  - 3.3.12.11: <proptype>
  - 3.3.12.12: <propvalue>
  - 3.3.12.13: <propdesc>
- 3.3.13: Troubleshooting elements
  - 3.3.13.1: <troubleshooting>
  - 3.3.13.2: <troublebody>
  - 3.3.13.3: <condition>
  - 3.3.13.4: <troubleSolution>
  - 3.3.13.5: <cause>
  - 3.3.13.6: <remedy>
  - 3.3.13.7: <responsibleParty>
- 3.3.14: Glossary elements
  - 3.3.14.1: Glossentry elements
    - 3.3.14.1.1: <glossentry>
    - 3.3.14.1.2: <glossterm>
    - 3.3.14.1.3: <glossdef>
    - 3.3.14.1.4: <glossAbbreviation>
    - 3.3.14.1.5: <glossAcronym>
    - 3.3.14.1.6: <glossAlt>
    - 3.3.14.1.7: <glossAlternateFor>
    - 3.3.14.1.8: <glossBody>
    - 3.3.14.1.9: <glossPartOfSpeech>
    - 3.3.14.1.10: <glossProperty>
    - 3.3.14.1.11: <glossScopeNote>
    - 3.3.14.1.12: <glossShortForm>
    - 3.3.14.1.13: <glossStatus>
    - 3.3.14.1.14: <glossSurfaceForm>
    - 3.3.14.1.15: <glossSymbol>
    - 3.3.14.1.16: <glossSynonym>
    - 3.3.14.1.17: <glossUsage>
  - 3.3.14.2: Glossary related elements
    - 3.3.14.2.1: <abbreviated-form>
    - 3.3.14.2.2: <glossref>
    - 3.3.14.2.3: <glossgroup>
- 3.3.15: Bookmap elements
  - 3.3.15.1: Bookmap content elements
    - 3.3.15.1.1: <bookmap>
    - 3.3.15.1.2: <abbrevlist>
    - 3.3.15.1.3: <amendments>
    - 3.3.15.1.4: <appendices>
    - 3.3.15.1.5: <appendix>
    - 3.3.15.1.6: <backmatter>
    - 3.3.15.1.7: <bibliolist>
    - 3.3.15.1.8: <bookabstract>
    - 3.3.15.1.9: <booklibrary>
    - 3.3.15.1.10: <booklist>
    - 3.3.15.1.11: <booklists>
    - 3.3.15.1.12: <booktitle>
    - 3.3.15.1.13: <booktitlealt>
    - 3.3.15.1.14: <chapter>
    - 3.3.15.1.15: <colophon>
    - 3.3.15.1.16: <dedication>
    - 3.3.15.1.17: <draftintro>
    - 3.3.15.1.18: <figurelist>
    - 3.3.15.1.19: <frontmatter>
    - 3.3.15.1.20: <glossarylist>
    - 3.3.15.1.21: <indexlist>
    - 3.3.15.1.22: <mainbooktitle>
    - 3.3.15.1.23: <notices>
    - 3.3.15.1.24: <part>
    - 3.3.15.1.25: <preface>
    - 3.3.15.1.26: <tablelist>
    - 3.3.15.1.27: <toc>
    - 3.3.15.1.28: <trademarklist>
  - 3.3.15.2: Bookmap metadata elements
    - 3.3.15.2.1: <bookmeta>
    - 3.3.15.2.2: <approved>
    - 3.3.15.2.3: <bookchangehistory>
    - 3.3.15.2.4: <bookevent>
    - 3.3.15.2.5: <bookeventtype>
    - 3.3.15.2.6: <bookid>
    - 3.3.15.2.7: <booknumber>
    - 3.3.15.2.8: <bookowner>
    - 3.3.15.2.9: <bookpartno>
    - 3.3.15.2.10: <bookrestriction>
    - 3.3.15.2.11: <bookrights>
    - 3.3.15.2.12: <completed>
    - 3.3.15.2.13: <copyrfirst>
    - 3.3.15.2.14: <copyrlast>
    - 3.3.15.2.15: <day>
    - 3.3.15.2.16: <edited>
    - 3.3.15.2.17: <edition>
    - 3.3.15.2.18: <isbn>
    - 3.3.15.2.19: <maintainer>
    - 3.3.15.2.20: <month>
    - 3.3.15.2.21: <organization>
    - 3.3.15.2.22: <person>
    - 3.3.15.2.23: <printlocation>
    - 3.3.15.2.24: <published>
    - 3.3.15.2.25: <publisherinformation>
    - 3.3.15.2.26: <publishtype>
    - 3.3.15.2.27: <reviewed>
    - 3.3.15.2.28: <revisionid>
    - 3.3.15.2.29: <started>
    - 3.3.15.2.30: <summary>
    - 3.3.15.2.31: <tested>
    - 3.3.15.2.32: <volume>
    - 3.3.15.2.33: <year>
- 3.3.16: Technical-content domains elements
  - 3.3.16.1: Equation domain elements
    - 3.3.16.1.1: <equation-block>
    - 3.3.16.1.2: <equation-figure>
    - 3.3.16.1.3: <equation-inline>
    - 3.3.16.1.4: <equation-number>
  - 3.3.16.2: Markup domain
    - 3.3.16.2.1: <markupname>
  - 3.3.16.3: MathML domain elements
    - 3.3.16.3.1: <mathml>
    - 3.3.16.3.2: <mathmlref>
  - 3.3.16.4: Programming elements
    - 3.3.16.4.1: <apiname>
    - 3.3.16.4.2: <codeblock>
    - 3.3.16.4.3: <codeph>
    - 3.3.16.4.4: <coderef>
    - 3.3.16.4.5: <option>
    - 3.3.16.4.6: <parmname>
    - 3.3.16.4.7: <parml>
    - 3.3.16.4.8: <plentry>
    - 3.3.16.4.9: <pt>
    - 3.3.16.4.10: <pd>
    - 3.3.16.4.11: <synph>
    - 3.3.16.4.12: <syntaxdiagram>
    - 3.3.16.4.13: <groupseq>
    - 3.3.16.4.14: <groupchoice>
    - 3.3.16.4.15: <groupcomp>
    - 3.3.16.4.16: <fragment>
    - 3.3.16.4.17: <fragref>
    - 3.3.16.4.18: <synblk>
    - 3.3.16.4.19: <synnote>
    - 3.3.16.4.20: <synnoteref>
    - 3.3.16.4.21: <kwd>
    - 3.3.16.4.22: <var>
    - 3.3.16.4.23: <oper>
    - 3.3.16.4.24: <delim>
    - 3.3.16.4.25: <sep>
    - 3.3.16.4.26: <repsep>
  - 3.3.16.5: Release-management domain elements
    - 3.3.16.5.1: <change-completed>
    - 3.3.16.5.2: <change-historylist>
    - 3.3.16.5.3: <change-item>
    - 3.3.16.5.4: <change-organization>
    - 3.3.16.5.5: <change-person>
    - 3.3.16.5.6: <change-request-id>
    - 3.3.16.5.7: <change-request-reference>
    - 3.3.16.5.8: <change-request-system>
    - 3.3.16.5.9: <change-revisionid>
    - 3.3.16.5.10: <change-started>
    - 3.3.16.5.11: <change-summary>
  - 3.3.16.6: Software elements
    - 3.3.16.6.1: <msgph>
    - 3.3.16.6.2: <msgblock>
    - 3.3.16.6.3: <msgnum>
    - 3.3.16.6.4: <cmdname>
    - 3.3.16.6.5: <varname>
    - 3.3.16.6.6: <filepath>
    - 3.3.16.6.7: <userinput>
    - 3.3.16.6.8: <systemoutput>
  - 3.3.16.7: SVG elements
    - 3.3.16.7.1: <svg-container>
    - 3.3.16.7.2: <svgref>
  - 3.3.16.8: Task requirements domain
    - 3.3.16.8.1: <prelreqs>
    - 3.3.16.8.2: <closereqs>
    - 3.3.16.8.3: <reqconds>
    - 3.3.16.8.4: <reqcond>
    - 3.3.16.8.5: <noconds>
    - 3.3.16.8.6: <reqcontp>
    - 3.3.16.8.7: <reqpers>
    - 3.3.16.8.8: <personnel>
    - 3.3.16.8.9: <perscat>
    - 3.3.16.8.10: <perskill>
    - 3.3.16.8.11: <esttime>
    - 3.3.16.8.12: <supeqli>
    - 3.3.16.8.13: <supequi>
    - 3.3.16.8.14: <supequip>
    - 3.3.16.8.15: <nosupeq>
    - 3.3.16.8.16: <supplies>
    - 3.3.16.8.17: <supply>
    - 3.3.16.8.18: <supplyli>
    - 3.3.16.8.19: <nosupply>
    - 3.3.16.8.20: <spare>
    - 3.3.16.8.21: <spares>
    - 3.3.16.8.22: <sparesli>
    - 3.3.16.8.23: <nospares>
    - 3.3.16.8.24: <nosafety>
    - 3.3.16.8.25: <safecond>
    - 3.3.16.8.26: <safety>
  - 3.3.16.9: User interface elements
    - 3.3.16.9.1: <uicontrol>
    - 3.3.16.9.2: <wintitle>
    - 3.3.16.9.3: <menucascade>
    - 3.3.16.9.4: <shortcut>
    - 3.3.16.9.5: <screen>
  - 3.3.16.10: XML mention domain
    - 3.3.16.10.1: <numcharref>
    - 3.3.16.10.2: <parameterentity>
    - 3.3.16.10.3: <textentity>
    - 3.3.16.10.4: <xmlatt>
    - 3.3.16.10.5: <xmlelement>
    - 3.3.16.10.6: <xmlnsname>
    - 3.3.16.10.7: <xmlpi>
  - 3.3.16.11: xNAL domain elements
    - 3.3.16.11.1: <authorinformation>
    - 3.3.16.11.2: <addressdetails>
    - 3.3.16.11.3: <administrativearea>
    - 3.3.16.11.4: <contactnumber>
    - 3.3.16.11.5: <contactnumbers>
    - 3.3.16.11.6: <country>
    - 3.3.16.11.7: <emailaddress>
    - 3.3.16.11.8: <emailaddresses>
    - 3.3.16.11.9: <firstname>
    - 3.3.16.11.10: <generationidentifier>
    - 3.3.16.11.11: <honorific>
    - 3.3.16.11.12: <lastname>
    - 3.3.16.11.13: <locality>
    - 3.3.16.11.14: <localityname>
    - 3.3.16.11.15: <middlename>
    - 3.3.16.11.16: <namedetails>
    - 3.3.16.11.17: <organizationinfo>
    - 3.3.16.11.18: <organizationname>
    - 3.3.16.11.19: <organizationnamedetails>
    - 3.3.16.11.20: <otherinfo>
    - 3.3.16.11.21: <personinfo>
    - 3.3.16.11.22: <personname>
    - 3.3.16.11.23: <postalcode>
    - 3.3.16.11.24: <thoroughfare>
    - 3.3.16.11.25: <url>
    - 3.3.16.11.26: <urls>
- 3.3.17: Attributes
  - 3.3.17.1: Universal attribute group
    - 3.3.17.1.1: ID attribute group
    - 3.3.17.1.2: Metadata attribute group
    - 3.3.17.1.3: Localization attribute group
    - 3.3.17.1.4: Debug attribute group
  - 3.3.17.2: Architectural attribute group
  - 3.3.17.3: Attributes common to many map elements
  - 3.3.17.4: Complex-table attribute group
  - 3.3.17.5: Data element attributes group
  - 3.3.17.6: Date attributes group
  - 3.3.17.7: Display attribute group
  - 3.3.17.8: Link relationship attribute group
  - 3.3.17.9: Other common attributes
  - 3.3.17.10: Simpletable attribute group
  - 3.3.17.11: Specialization attributes group
  - 3.3.17.12: Topicref element attributes group
  - 3.3.17.13: Complex attribute definitions
    - 3.3.17.13.1: The @href attribute
    - 3.3.17.13.2: The @keys attribute
    - 3.3.17.13.3: The @keyref attribute
    - 3.3.17.13.4: The @keyscope attribute
    - 3.3.17.13.5: The @conref attribute
      - 3.3.17.13.5.1: Using the -dita-use-conref-target value
    - 3.3.17.13.6: The @conaction attribute
    - 3.3.17.13.7: The @conrefend attribute
    - 3.3.17.13.8: The @conkeyref attribute
    - 3.3.17.13.9: The @type attribute
    - 3.3.17.13.10: The @format attribute
    - 3.3.17.13.11: The @scope attribute
    - 3.3.17.13.12: The @role and @otherrole attributes
Chapter 4: Conformance
Appendix A: Acknowledgments
Appendix B: Non-normative information
Appendix C: Content models: Technical content edition
- C.7.1 A elements
- C.7.2 B elements
- C.7.3 C elements
- C.7.4 D elements
- C.7.5 E elements
- C.7.6 F elements
- C.7.7 G elements
- C.7.8 H elements
- C.7.9 I elements
- C.7.10 K elements
- C.7.11 L elements
- C.7.12 M elements
- C.7.13 N elements
- C.7.14 O elements
- C.7.15 P elements
- C.7.16 Q elements
- C.7.17 R elements
- C.7.18 S elements
- C.7.19 T elements
- C.7.20 U elements
- C.7.21 V elements
- C.7.22 W elements
- C.7.23 X elements
- C.7.24 Y elements

Table of Contents

DITA Resource Center

<ddhd>

The <ddhd> element provides an optional heading or title for a column of descriptions or definitions in a definition list (<dl>).

Content models

See appendix for information about this element in OASIS document type shells.

Inheritance

- topic/ddhd

Example

Definition list with a heading

<dl>
 <dlhead>
  <dthd>Image File View Selection</dthd>
  <ddhd>Resulting Information</ddhd>
 </dlhead>
 <dlentry>
  <dt>File Type</dt>
  <dd>Image's file extension</dd>
 </dlentry>
 <dlentry>
  <dt>Image Class</dt>
  <dd>Image is raster, vector, metafile or 3D</dd>
 </dlentry>
 <dlentry>
  <dt>Number of pages</dt>
  <dd>Number of pages in the image</dd>
 </dlentry>
 <dlentry>
  <dt>Fonts</dt>
  <dd>Names of the fonts contained within a vector image</dd>
 </dlentry>
</dl>

Attributes

The following attributes are available on this element: Universal attribute group and @outputclass.

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