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Chapter 1: Introduction to DITA 1.3
- 1.1.1: About the DITA specification: All-inclusive 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: All-inclusive 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
- 2.2.8: Learning and training specializations
  - 2.2.8.1: Overview
  - 2.2.8.2: Objectives of the DITA learning and training specializations
  - 2.2.8.3: A learning objects approach to learning and training content
  - 2.2.8.4: Use cases
  - 2.2.8.5: Summary of learning topic, map, and domain designs
  - 2.2.8.6: Support for learningDomain1 and learningDomain2
  - 2.2.8.7: Learning and training specialization usage
Chapter 3: Language reference: All-inclusive 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
  - 3.3.1.3: Learning and training elements, A to Z
  - 3.3.1.4: All DITA 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: Technical content elements
  - 3.3.10.1: Concept elements
    - 3.3.10.1.1: <concept>
    - 3.3.10.1.2: <conbody>
    - 3.3.10.1.3: <conbodydiv>
  - 3.3.10.2: Task elements
    - 3.3.10.2.1: <task>
    - 3.3.10.2.2: <taskbody>
    - 3.3.10.2.3: <prereq>
    - 3.3.10.2.4: <context>
    - 3.3.10.2.5: <steps>
    - 3.3.10.2.6: <steps-informal>
    - 3.3.10.2.7: <steps-unordered>
    - 3.3.10.2.8: <step>
    - 3.3.10.2.9: <stepsection>
    - 3.3.10.2.10: <cmd>
    - 3.3.10.2.11: <info>
    - 3.3.10.2.12: <substeps>
    - 3.3.10.2.13: <substep>
    - 3.3.10.2.14: <stepxmp>
    - 3.3.10.2.15: <choicetable>
    - 3.3.10.2.16: <chhead>
    - 3.3.10.2.17: <choptionhd>
    - 3.3.10.2.18: <chdeschd>
    - 3.3.10.2.19: <chrow>
    - 3.3.10.2.20: <choption>
    - 3.3.10.2.21: <chdesc>
    - 3.3.10.2.22: <choices>
    - 3.3.10.2.23: <choice>
    - 3.3.10.2.24: <steptroubleshooting>
    - 3.3.10.2.25: <stepresult>
    - 3.3.10.2.26: <tutorialinfo>
    - 3.3.10.2.27: <tasktroubleshooting>
    - 3.3.10.2.28: <result>
    - 3.3.10.2.29: <postreq>
  - 3.3.10.3: Reference elements
    - 3.3.10.3.1: <reference>
    - 3.3.10.3.2: <refbody>
    - 3.3.10.3.3: <refbodydiv>
    - 3.3.10.3.4: <refsyn>
    - 3.3.10.3.5: <properties>
    - 3.3.10.3.6: <prophead>
    - 3.3.10.3.7: <proptypehd>
    - 3.3.10.3.8: <propvaluehd>
    - 3.3.10.3.9: <propdeschd>
    - 3.3.10.3.10: <property>
    - 3.3.10.3.11: <proptype>
    - 3.3.10.3.12: <propvalue>
    - 3.3.10.3.13: <propdesc>
  - 3.3.10.4: Troubleshooting elements
    - 3.3.10.4.1: <troubleshooting>
    - 3.3.10.4.2: <troublebody>
    - 3.3.10.4.3: <condition>
    - 3.3.10.4.4: <troubleSolution>
    - 3.3.10.4.5: <cause>
    - 3.3.10.4.6: <remedy>
    - 3.3.10.4.7: <responsibleParty>
  - 3.3.10.5: Glossary elements
    - 3.3.10.5.1: Glossentry elements
      - 3.3.10.5.1.1: <glossentry>
      - 3.3.10.5.1.2: <glossterm>
      - 3.3.10.5.1.3: <glossdef>
      - 3.3.10.5.1.4: <glossAbbreviation>
      - 3.3.10.5.1.5: <glossAcronym>
      - 3.3.10.5.1.6: <glossAlt>
      - 3.3.10.5.1.7: <glossAlternateFor>
      - 3.3.10.5.1.8: <glossBody>
      - 3.3.10.5.1.9: <glossPartOfSpeech>
      - 3.3.10.5.1.10: <glossProperty>
      - 3.3.10.5.1.11: <glossScopeNote>
      - 3.3.10.5.1.12: <glossShortForm>
      - 3.3.10.5.1.13: <glossStatus>
      - 3.3.10.5.1.14: <glossSurfaceForm>
      - 3.3.10.5.1.15: <glossSymbol>
      - 3.3.10.5.1.16: <glossSynonym>
      - 3.3.10.5.1.17: <glossUsage>
    - 3.3.10.5.2: Glossary related elements
      - 3.3.10.5.2.1: <abbreviated-form>
      - 3.3.10.5.2.2: <glossref>
      - 3.3.10.5.2.3: <glossgroup>
  - 3.3.10.6: Bookmap elements
    - 3.3.10.6.1: Bookmap content elements
      - 3.3.10.6.1.1: <bookmap>
      - 3.3.10.6.1.2: <abbrevlist>
      - 3.3.10.6.1.3: <amendments>
      - 3.3.10.6.1.4: <appendices>
      - 3.3.10.6.1.5: <appendix>
      - 3.3.10.6.1.6: <backmatter>
      - 3.3.10.6.1.7: <bibliolist>
      - 3.3.10.6.1.8: <bookabstract>
      - 3.3.10.6.1.9: <booklibrary>
      - 3.3.10.6.1.10: <booklist>
      - 3.3.10.6.1.11: <booklists>
      - 3.3.10.6.1.12: <booktitle>
      - 3.3.10.6.1.13: <booktitlealt>
      - 3.3.10.6.1.14: <chapter>
      - 3.3.10.6.1.15: <colophon>
      - 3.3.10.6.1.16: <dedication>
      - 3.3.10.6.1.17: <draftintro>
      - 3.3.10.6.1.18: <figurelist>
      - 3.3.10.6.1.19: <frontmatter>
      - 3.3.10.6.1.20: <glossarylist>
      - 3.3.10.6.1.21: <indexlist>
      - 3.3.10.6.1.22: <mainbooktitle>
      - 3.3.10.6.1.23: <notices>
      - 3.3.10.6.1.24: <part>
      - 3.3.10.6.1.25: <preface>
      - 3.3.10.6.1.26: <tablelist>
      - 3.3.10.6.1.27: <toc>
      - 3.3.10.6.1.28: <trademarklist>
    - 3.3.10.6.2: Bookmap metadata elements
      - 3.3.10.6.2.1: <bookmeta>
      - 3.3.10.6.2.2: <approved>
      - 3.3.10.6.2.3: <bookchangehistory>
      - 3.3.10.6.2.4: <bookevent>
      - 3.3.10.6.2.5: <bookeventtype>
      - 3.3.10.6.2.6: <bookid>
      - 3.3.10.6.2.7: <booknumber>
      - 3.3.10.6.2.8: <bookowner>
      - 3.3.10.6.2.9: <bookpartno>
      - 3.3.10.6.2.10: <bookrestriction>
      - 3.3.10.6.2.11: <bookrights>
      - 3.3.10.6.2.12: <completed>
      - 3.3.10.6.2.13: <copyrfirst>
      - 3.3.10.6.2.14: <copyrlast>
      - 3.3.10.6.2.15: <day>
      - 3.3.10.6.2.16: <edited>
      - 3.3.10.6.2.17: <edition>
      - 3.3.10.6.2.18: <isbn>
      - 3.3.10.6.2.19: <maintainer>
      - 3.3.10.6.2.20: <month>
      - 3.3.10.6.2.21: <organization>
      - 3.3.10.6.2.22: <person>
      - 3.3.10.6.2.23: <printlocation>
      - 3.3.10.6.2.24: <published>
      - 3.3.10.6.2.25: <publisherinformation>
      - 3.3.10.6.2.26: <publishtype>
      - 3.3.10.6.2.27: <reviewed>
      - 3.3.10.6.2.28: <revisionid>
      - 3.3.10.6.2.29: <started>
      - 3.3.10.6.2.30: <summary>
      - 3.3.10.6.2.31: <tested>
      - 3.3.10.6.2.32: <volume>
      - 3.3.10.6.2.33: <year>
  - 3.3.10.7: Technical-content domains elements
    - 3.3.10.7.1: Equation domain elements
      - 3.3.10.7.1.1: <equation-block>
      - 3.3.10.7.1.2: <equation-figure>
      - 3.3.10.7.1.3: <equation-inline>
      - 3.3.10.7.1.4: <equation-number>
    - 3.3.10.7.2: Markup domain
      - 3.3.10.7.2.1: <markupname>
    - 3.3.10.7.3: MathML domain elements
      - 3.3.10.7.3.1: <mathml>
      - 3.3.10.7.3.2: <mathmlref>
    - 3.3.10.7.4: Programming elements
      - 3.3.10.7.4.1: <apiname>
      - 3.3.10.7.4.2: <codeblock>
      - 3.3.10.7.4.3: <codeph>
      - 3.3.10.7.4.4: <coderef>
      - 3.3.10.7.4.5: <option>
      - 3.3.10.7.4.6: <parmname>
      - 3.3.10.7.4.7: <parml>
      - 3.3.10.7.4.8: <plentry>
      - 3.3.10.7.4.9: <pt>
      - 3.3.10.7.4.10: <pd>
      - 3.3.10.7.4.11: <synph>
      - 3.3.10.7.4.12: <syntaxdiagram>
      - 3.3.10.7.4.13: <groupseq>
      - 3.3.10.7.4.14: <groupchoice>
      - 3.3.10.7.4.15: <groupcomp>
      - 3.3.10.7.4.16: <fragment>
      - 3.3.10.7.4.17: <fragref>
      - 3.3.10.7.4.18: <synblk>
      - 3.3.10.7.4.19: <synnote>
      - 3.3.10.7.4.20: <synnoteref>
      - 3.3.10.7.4.21: <kwd>
      - 3.3.10.7.4.22: <var>
      - 3.3.10.7.4.23: <oper>
      - 3.3.10.7.4.24: <delim>
      - 3.3.10.7.4.25: <sep>
      - 3.3.10.7.4.26: <repsep>
    - 3.3.10.7.5: Release-management domain elements
      - 3.3.10.7.5.1: <change-completed>
      - 3.3.10.7.5.2: <change-historylist>
      - 3.3.10.7.5.3: <change-item>
      - 3.3.10.7.5.4: <change-organization>
      - 3.3.10.7.5.5: <change-person>
      - 3.3.10.7.5.6: <change-request-id>
      - 3.3.10.7.5.7: <change-request-reference>
      - 3.3.10.7.5.8: <change-request-system>
      - 3.3.10.7.5.9: <change-revisionid>
      - 3.3.10.7.5.10: <change-started>
      - 3.3.10.7.5.11: <change-summary>
    - 3.3.10.7.6: Software elements
      - 3.3.10.7.6.1: <msgph>
      - 3.3.10.7.6.2: <msgblock>
      - 3.3.10.7.6.3: <msgnum>
      - 3.3.10.7.6.4: <cmdname>
      - 3.3.10.7.6.5: <varname>
      - 3.3.10.7.6.6: <filepath>
      - 3.3.10.7.6.7: <userinput>
      - 3.3.10.7.6.8: <systemoutput>
    - 3.3.10.7.7: SVG elements
      - 3.3.10.7.7.1: <svg-container>
      - 3.3.10.7.7.2: <svgref>
    - 3.3.10.7.8: Task requirements domain
      - 3.3.10.7.8.1: <prelreqs>
      - 3.3.10.7.8.2: <closereqs>
      - 3.3.10.7.8.3: <reqconds>
      - 3.3.10.7.8.4: <reqcond>
      - 3.3.10.7.8.5: <noconds>
      - 3.3.10.7.8.6: <reqcontp>
      - 3.3.10.7.8.7: <reqpers>
      - 3.3.10.7.8.8: <personnel>
      - 3.3.10.7.8.9: <perscat>
      - 3.3.10.7.8.10: <perskill>
      - 3.3.10.7.8.11: <esttime>
      - 3.3.10.7.8.12: <supeqli>
      - 3.3.10.7.8.13: <supequi>
      - 3.3.10.7.8.14: <supequip>
      - 3.3.10.7.8.15: <nosupeq>
      - 3.3.10.7.8.16: <supplies>
      - 3.3.10.7.8.17: <supply>
      - 3.3.10.7.8.18: <supplyli>
      - 3.3.10.7.8.19: <nosupply>
      - 3.3.10.7.8.20: <spare>
      - 3.3.10.7.8.21: <spares>
      - 3.3.10.7.8.22: <sparesli>
      - 3.3.10.7.8.23: <nospares>
      - 3.3.10.7.8.24: <nosafety>
      - 3.3.10.7.8.25: <safecond>
      - 3.3.10.7.8.26: <safety>
    - 3.3.10.7.9: User interface elements
      - 3.3.10.7.9.1: <uicontrol>
      - 3.3.10.7.9.2: <wintitle>
      - 3.3.10.7.9.3: <menucascade>
      - 3.3.10.7.9.4: <shortcut>
      - 3.3.10.7.9.5: <screen>
    - 3.3.10.7.10: XML mention domain
      - 3.3.10.7.10.1: <numcharref>
      - 3.3.10.7.10.2: <parameterentity>
      - 3.3.10.7.10.3: <textentity>
      - 3.3.10.7.10.4: <xmlatt>
      - 3.3.10.7.10.5: <xmlelement>
      - 3.3.10.7.10.6: <xmlnsname>
      - 3.3.10.7.10.7: <xmlpi>
    - 3.3.10.7.11: xNAL domain elements
      - 3.3.10.7.11.1: <authorinformation>
      - 3.3.10.7.11.2: <addressdetails>
      - 3.3.10.7.11.3: <administrativearea>
      - 3.3.10.7.11.4: <contactnumber>
      - 3.3.10.7.11.5: <contactnumbers>
      - 3.3.10.7.11.6: <country>
      - 3.3.10.7.11.7: <emailaddress>
      - 3.3.10.7.11.8: <emailaddresses>
      - 3.3.10.7.11.9: <firstname>
      - 3.3.10.7.11.10: <generationidentifier>
      - 3.3.10.7.11.11: <honorific>
      - 3.3.10.7.11.12: <lastname>
      - 3.3.10.7.11.13: <locality>
      - 3.3.10.7.11.14: <localityname>
      - 3.3.10.7.11.15: <middlename>
      - 3.3.10.7.11.16: <namedetails>
      - 3.3.10.7.11.17: <organizationinfo>
      - 3.3.10.7.11.18: <organizationname>
      - 3.3.10.7.11.19: <organizationnamedetails>
      - 3.3.10.7.11.20: <otherinfo>
      - 3.3.10.7.11.21: <personinfo>
      - 3.3.10.7.11.22: <personname>
      - 3.3.10.7.11.23: <postalcode>
      - 3.3.10.7.11.24: <thoroughfare>
      - 3.3.10.7.11.25: <url>
      - 3.3.10.7.11.26: <urls>
- 3.3.11: Learning and training elements
  - 3.3.11.1: Learning and training: topic elements
    - 3.3.11.1.1: <learningOverview>
    - 3.3.11.1.2: <learningOverviewbody>
    - 3.3.11.1.3: <learningContent>
    - 3.3.11.1.4: <learningContentbody>
    - 3.3.11.1.5: <learningSummary>
    - 3.3.11.1.6: <learningSummarybody>
    - 3.3.11.1.7: <learningAssessment>
    - 3.3.11.1.8: <learningAssessmentbody>
    - 3.3.11.1.9: <learningPlan>
    - 3.3.11.1.10: <learningPlanbody>
    - 3.3.11.1.11: <learningBase>
    - 3.3.11.1.12: <learningBasebody>
  - 3.3.11.2: Learning and training: map types
    - 3.3.11.2.1: <learningGroupMap>
    - 3.3.11.2.2: <learningObjectMap>
  - 3.3.11.3: Learning and training: map domain elements
    - 3.3.11.3.1: <learningGroup>
    - 3.3.11.3.2: <learningObject>
    - 3.3.11.3.3: <learningObjectMapRef>
    - 3.3.11.3.4: <learningGroupMapRef>
    - 3.3.11.3.5: <learningPlanRef>
    - 3.3.11.3.6: <learningPreAssessmentRef>
    - 3.3.11.3.7: <learningOverviewRef>
    - 3.3.11.3.8: <learningContentRef>
    - 3.3.11.3.9: <learningContentComponentRef>
    - 3.3.11.3.10: <learningSummaryRef>
    - 3.3.11.3.11: <learningPostAssessmentRef>
  - 3.3.11.4: Learning and training: interactions domain elements
    - 3.3.11.4.1: Top level interactions elements
      - 3.3.11.4.1.1: <lcInstructornote2>
      - 3.3.11.4.1.2: <lcOpenQuestion2>
      - 3.3.11.4.1.3: <lcTrueFalse2>
      - 3.3.11.4.1.4: <lcSingleSelect2>
      - 3.3.11.4.1.5: <lcMultipleSelect2>
      - 3.3.11.4.1.6: <lcSequencing2>
      - 3.3.11.4.1.7: <lcMatching2>
      - 3.3.11.4.1.8: <lcHotspot2>
      - 3.3.11.4.1.9: <lcInteractionBase2>
      - 3.3.11.4.1.10: <lcQuestionBase2>
    - 3.3.11.4.2: Interactions domain content elements
      - 3.3.11.4.2.1: <lcAnswerContent2>
      - 3.3.11.4.2.2: <lcAnswerOption2>
      - 3.3.11.4.2.3: <lcAnswerOptionGroup2>
      - 3.3.11.4.2.4: <lcArea2>
      - 3.3.11.4.2.5: <lcAreaCoords2>
      - 3.3.11.4.2.6: <lcAreaShape2>
      - 3.3.11.4.2.7: <lcAsset2>
      - 3.3.11.4.2.8: <lcCorrectResponse2>
      - 3.3.11.4.2.9: <lcFeedback2>
      - 3.3.11.4.2.10: <lcFeedbackCorrect2>
      - 3.3.11.4.2.11: <lcFeedbackIncorrect2>
      - 3.3.11.4.2.12: <lcHotspotMap2>
      - 3.3.11.4.2.13: <lcInteractionLabel2>
      - 3.3.11.4.2.14: <lcItem2>
      - 3.3.11.4.2.15: <lcMatchingHeader2>
      - 3.3.11.4.2.16: <lcMatchingItem2>
      - 3.3.11.4.2.17: <lcMatchingItemFeedback2>
      - 3.3.11.4.2.18: <lcMatchingPair2>
      - 3.3.11.4.2.19: <lcMatchTable2>
      - 3.3.11.4.2.20: <lcOpenAnswer2>
      - 3.3.11.4.2.21: <lcQuestion2>
      - 3.3.11.4.2.22: <lcSequence2>
      - 3.3.11.4.2.23: <lcSequenceOption2>
      - 3.3.11.4.2.24: <lcSequenceOptionGroup2>
  - 3.3.11.5: Learning and training: interactions domain elements (DEPRECATED)
    - 3.3.11.5.1: Top level interactions elements (DEPRECATED)
      - 3.3.11.5.1.1: <lcInstructornote>
      - 3.3.11.5.1.2: <lcOpenQuestion>
      - 3.3.11.5.1.3: <lcTrueFalse>
      - 3.3.11.5.1.4: <lcSingleSelect>
      - 3.3.11.5.1.5: <lcMultipleSelect>
      - 3.3.11.5.1.6: <lcSequencing>
      - 3.3.11.5.1.7: <lcMatching>
      - 3.3.11.5.1.8: <lcHotspot>
      - 3.3.11.5.1.9: <lcInteractionBase>
      - 3.3.11.5.1.10: <lcQuestionBase>
    - 3.3.11.5.2: Interactions domain content elements (DEPRECATED)
      - 3.3.11.5.2.1: <lcAnswerContent>
      - 3.3.11.5.2.2: <lcAnswerOption>
      - 3.3.11.5.2.3: <lcAnswerOptionGroup>
      - 3.3.11.5.2.4: <lcArea>
      - 3.3.11.5.2.5: <lcAreaCoords>
      - 3.3.11.5.2.6: <lcAreaShape>
      - 3.3.11.5.2.7: <lcAsset>
      - 3.3.11.5.2.8: <lcCorrectResponse>
      - 3.3.11.5.2.9: <lcFeedback>
      - 3.3.11.5.2.10: <lcFeedbackCorrect>
      - 3.3.11.5.2.11: <lcFeedbackIncorrect>
      - 3.3.11.5.2.12: <lcHotspotMap>
      - 3.3.11.5.2.13: <lcItem>
      - 3.3.11.5.2.14: <lcMatchingHeader>
      - 3.3.11.5.2.15: <lcMatchingItem>
      - 3.3.11.5.2.16: <lcMatchingItemFeedback>
      - 3.3.11.5.2.17: <lcMatchingPair>
      - 3.3.11.5.2.18: <lcMatchTable>
      - 3.3.11.5.2.19: <lcOpenAnswer>
      - 3.3.11.5.2.20: <lcQuestion>
      - 3.3.11.5.2.21: <lcSequence>
      - 3.3.11.5.2.22: <lcSequenceOption>
      - 3.3.11.5.2.23: <lcSequenceOptionGroup>
  - 3.3.11.6: Learning and training: metadata elements
    - 3.3.11.6.1: <lcLom>
    - 3.3.11.6.2: <lomAggregationLevel>
    - 3.3.11.6.3: <lomContext>
    - 3.3.11.6.4: <lomCoverage>
    - 3.3.11.6.5: <lomDifficulty>
    - 3.3.11.6.6: <lomInstallationRemarks>
    - 3.3.11.6.7: <lomIntendedUserRole>
    - 3.3.11.6.8: <lomInteractivityLevel>
    - 3.3.11.6.9: <lomInteractivityType>
    - 3.3.11.6.10: <lomLearningResourceType>
    - 3.3.11.6.11: <lomOtherPlatformRequirements>
    - 3.3.11.6.12: <lomSemanticDensity>
    - 3.3.11.6.13: <lomStructure>
    - 3.3.11.6.14: <lomTechRequirement>
    - 3.3.11.6.15: <lomTypicalAgeRange>
    - 3.3.11.6.16: <lomTypicalLearningTime>
  - 3.3.11.7: Learning and training: common content elements
    - 3.3.11.7.1: <lcAge>
    - 3.3.11.7.2: <lcAssessment>
    - 3.3.11.7.3: <lcAttitude>
    - 3.3.11.7.4: <lcAudience>
    - 3.3.11.7.5: <lcBackground>
    - 3.3.11.7.6: <lcChallenge>
    - 3.3.11.7.7: <lcCIN>
    - 3.3.11.7.8: <lcClassroom>
    - 3.3.11.7.9: <lcClient>
    - 3.3.11.7.10: <lcConstraints>
    - 3.3.11.7.11: <lcDelivDate>
    - 3.3.11.7.12: <lcDelivery>
    - 3.3.11.7.13: <lcDownloadTime>
    - 3.3.11.7.14: <lcDuration>
    - 3.3.11.7.15: <lcEdLevel>
    - 3.3.11.7.16: <lcFileSizeLimitations>
    - 3.3.11.7.17: <lcGapAnalysis>
    - 3.3.11.7.18: <lcGapItem>
    - 3.3.11.7.19: <lcGapItemDelta>
    - 3.3.11.7.20: <lcGeneralDescription>
    - 3.3.11.7.21: <lcGoals>
    - 3.3.11.7.22: <lcGraphics>
    - 3.3.11.7.23: <lcHandouts>
    - 3.3.11.7.24: <lcInstruction>
    - 3.3.11.7.25: <lcInteraction>
    - 3.3.11.7.26: <lcIntervention>
    - 3.3.11.7.27: <lcInterventionItem>
    - 3.3.11.7.28: <lcIntro>
    - 3.3.11.7.29: <lcJtaItem>
    - 3.3.11.7.30: <lcKnowledge>
    - 3.3.11.7.31: <lcLearnStrat>
    - 3.3.11.7.32: <lcLMS>
    - 3.3.11.7.33: <lcModDate>
    - 3.3.11.7.34: <lcMotivation>
    - 3.3.11.7.35: <lcNeeds>
    - 3.3.11.7.36: <lcNeedsAnalysis>
    - 3.3.11.7.37: <lcNextSteps>
    - 3.3.11.7.38: <lcNoLMS>
    - 3.3.11.7.39: <lcObjective>
    - 3.3.11.7.40: <lcObjectives>
    - 3.3.11.7.41: <lcObjectivesGroup>
    - 3.3.11.7.42: <lcObjectivesStem>
    - 3.3.11.7.43: <lcOJT>
    - 3.3.11.7.44: <lcOrganizational>
    - 3.3.11.7.45: <lcOrgConstraints>
    - 3.3.11.7.46: <lcPlanAudience>
    - 3.3.11.7.47: <lcPlanDescrip>
    - 3.3.11.7.48: <lcPlanObjective>
    - 3.3.11.7.49: <lcPlanPrereqs>
    - 3.3.11.7.50: <lcPlanResources>
    - 3.3.11.7.51: <lcPlanSubject>
    - 3.3.11.7.52: <lcPlanTitle>
    - 3.3.11.7.53: <lcPlayers>
    - 3.3.11.7.54: <lcPrereqs>
    - 3.3.11.7.55: <lcProcesses>
    - 3.3.11.7.56: <lcProject>
    - 3.3.11.7.57: <lcResolution>
    - 3.3.11.7.58: <lcResources>
    - 3.3.11.7.59: <lcReview>
    - 3.3.11.7.60: <lcSecurity>
    - 3.3.11.7.61: <lcSkills>
    - 3.3.11.7.62: <lcSpecChars>
    - 3.3.11.7.63: <lcSummary>
    - 3.3.11.7.64: <lcTask>
    - 3.3.11.7.65: <lcTaskItem>
    - 3.3.11.7.66: <lcTechnical>
    - 3.3.11.7.67: <lcTime>
    - 3.3.11.7.68: <lcValues>
    - 3.3.11.7.69: <lcViewers>
    - 3.3.11.7.70: <lcW3C>
    - 3.3.11.7.71: <lcWorkEnv>
    - 3.3.11.7.72: <lcWorkEnvDescription>
- 3.3.12: Attributes
  - 3.3.12.1: Universal attribute group
    - 3.3.12.1.1: ID attribute group
    - 3.3.12.1.2: Metadata attribute group
    - 3.3.12.1.3: Localization attribute group
    - 3.3.12.1.4: Debug attribute group
  - 3.3.12.2: Architectural attribute group
  - 3.3.12.3: Attributes common to many map elements
  - 3.3.12.4: Complex-table attribute group
  - 3.3.12.5: Data element attributes group
  - 3.3.12.6: Date attributes group
  - 3.3.12.7: Display attribute group
  - 3.3.12.8: Link relationship attribute group
  - 3.3.12.9: Other common attributes
  - 3.3.12.10: Simpletable attribute group
  - 3.3.12.11: Specialization attributes group
  - 3.3.12.12: Topicref element attributes group
  - 3.3.12.13: Complex attribute definitions
    - 3.3.12.13.1: The @href attribute
    - 3.3.12.13.2: The @keys attribute
    - 3.3.12.13.3: The @keyref attribute
    - 3.3.12.13.4: The @keyscope attribute
    - 3.3.12.13.5: The @conref attribute
      - 3.3.12.13.5.1: Using the -dita-use-conref-target value
    - 3.3.12.13.6: The @conaction attribute
    - 3.3.12.13.7: The @conrefend attribute
    - 3.3.12.13.8: The @conkeyref attribute
    - 3.3.12.13.9: The @type attribute
    - 3.3.12.13.10: The @format attribute
    - 3.3.12.13.11: The @scope attribute
    - 3.3.12.13.12: The @role and @otherrole attributes
Chapter 4: Conformance
Appendix A: Acknowledgments
Appendix B: Non-normative information
Appendix C: Content models: All-inclusive 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

The @format attribute

The @format attribute identifies the format of the resource that is referenced. If no value is specified, but the attribute is specified on an ancestor within a map or within the related-links section, the value will cascade from the closest ancestor.

The following values for @format have special processing implications:

dita: The destination uses DITA topic markup or markup specialized from a DITA topic. Unless otherwise specified, when @format is set to "dita", the value for the @type attribute will be treated as "topic".
ditamap: The linked-to resource is a DITA map. It represents the referenced hierarchy at the current point in the referencing map. References to other maps can occur at any point in a map, but because relationship tables are only valid as children of a map, referenced relationship tables are treated as children of the referencing map.

note

If a <topicref> element that references a map contains child <topicref> elements, the processing behavior regarding the child <topicref> elements is undefined.
(no value): The processing default is used. The processing default for the @format attribute is determined by inspecting the value of the @href attribute. If the @href attribute specifies a file extension, the processing default for the @format attribute is that extension, after conversion to lower-case and with no leading period. The only exception to this is if the extension is "xml", in which case the default format is "dita". If there is no extension, but the @href value is an absolute URI whose scheme is "http" or "https", then the processing default is "html". In all other cases where no extension is available, the processing default is "dita".
If the actual format of the referenced content differs from the effective value of the @format attribute, and a processor is capable of identifying such cases, it MAY recover gracefully and treat the content as its actual format, but SHOULD also issue a message.

For other formats, using the file extension without the "." character typically represents the format. For example, the following values are all possible values for @format:

html: The format of the linked-to resource is HTML or XHTML.
pdf: The format of the linked-to resource is PDF.
txt: The format of the linked-to resource is a text file.

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