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Chapter 1: Introduction
- 1.1.1: Terminology
- 1.1.2: Normative references
- 1.1.3: Non-normative references
- 1.1.4: Formatting conventions in the XHTML version of the specification
Chapter 2: Architectural specification
- 2.2.1: Base architecture
  - 2.2.1.1: Introduction to DITA
    - 2.2.1.1.1: About the specification source
    - 2.2.1.1.2: DITA terminology and notation
    - 2.2.1.1.3: Basic concepts
    - 2.2.1.1.4: File naming conventions
    - 2.2.1.1.5: Producing different deliverables from a single source
  - 2.2.1.2: DITA markup
    - 2.2.1.2.1: DITA topics
      - 2.2.1.2.1.1: The topic as the basic unit of information
      - 2.2.1.2.1.2: The benefits of a topic-based architecture
        
        2.2.1.2.1.2.1: Disciplined, topic-oriented writing
        
        2.2.1.2.1.2.2: Transitional text solutions
      - 2.2.1.2.1.3: Information typing
      - 2.2.1.2.1.4: Generic topics
      - 2.2.1.2.1.5: Topic structure
      - 2.2.1.2.1.6: Topic content
      - 2.2.1.2.1.7: Topic domains: Basic DITA
    - 2.2.1.2.2: DITA maps
      - 2.2.1.2.2.1: Definition of DITA maps
      - 2.2.1.2.2.2: Purpose of DITA maps
      - 2.2.1.2.2.3: DITA map elements
      - 2.2.1.2.2.4: DITA map attributes
      - 2.2.1.2.2.5: Subject scheme maps
    - 2.2.1.2.3: DITA metadata
      - 2.2.1.2.3.1: Metadata elements
      - 2.2.1.2.3.2: Metadata attributes
        
        2.2.1.2.3.2.1: Conditional processing attributes
        
        2.2.1.2.3.2.2: Translation and localization attributes
        
        2.2.1.2.3.2.3: Architectural attributes
      - 2.2.1.2.3.3: Metadata in maps and topics
      - 2.2.1.2.3.4: Cascading of attributes and metadata in a DITA map
      - 2.2.1.2.3.5: Map-to-map cascading behaviors
      - 2.2.1.2.3.6: Reconciling topic and map metadata
  - 2.2.1.3: DITA processing
    - 2.2.1.3.1: Module compatibility and the @domains attribute
    - 2.2.1.3.2: Navigation behaviors
    - 2.2.1.3.3: DITA linking
      - 2.2.1.3.3.1: Links within maps
      - 2.2.1.3.3.2: Links within topics
    - 2.2.1.3.4: DITA addressing
      - 2.2.1.3.4.1: ID attribute
      - 2.2.1.3.4.2: URI-based (direct) addressing
      - 2.2.1.3.4.3: Key-based addressing
        
        2.2.1.3.4.3.1: Overview of keys
        
        2.2.1.3.4.3.2: Using keys to address DITA elements
        
        2.2.1.3.4.3.3: Processing key references
        
        2.2.1.3.4.3.4: Examples of keys
      - 2.2.1.3.4.4: Summary of addressing elements
    - 2.2.1.3.5: Content inclusion (conref)
    - 2.2.1.3.6: Conditional processing (profiling)
    - 2.2.1.3.7: Chunking
    - 2.2.1.3.8: Printing
    - 2.2.1.3.9: Translation and localization
      - 2.2.1.3.9.1: The @xml:lang attribute
      - 2.2.1.3.9.2: The dir attribute
  - 2.2.1.4: Configuration, specialization, and constraints
    - 2.2.1.4.1: Overview of DITA extension facilities
      - 2.2.1.4.1.1: Recognized XML document constraint mechanisms
    - 2.2.1.4.2: Configuration (Document type shells)
      - 2.2.1.4.2.1: DTD document-type shell: Coding requirements
      - 2.2.1.4.2.2: XSD document-type shell: Coding requirements
    - 2.2.1.4.3: Specialization
      - 2.2.1.4.3.1: Vocabulary modules
      - 2.2.1.4.3.2: Requirements for specialized element types and attributes
      - 2.2.1.4.3.3: Element type specialization hierarchy declaration (the @class attribute)
      - 2.2.1.4.3.4: Domain usage declaration (the @domains attribute)
      - 2.2.1.4.3.5: Generalization
      - 2.2.1.4.3.6: Attribute generalization
      - 2.2.1.4.3.7: Specializing foreign or unknown content
      - 2.2.1.4.3.8: Specialization module coding requirements
        
        2.2.1.4.3.8.1: DTD syntax specialization module coding requirements
        
        2.2.1.4.3.8.1.1: General element type declaration coding requirements
        
        2.2.1.4.3.8.1.2: Structural module coding requirements
        
        2.2.1.4.3.8.1.3: Topic type module coding requirements
        
        2.2.1.4.3.8.1.4: Element domain module coding requirements
        
        2.2.1.4.3.8.1.5: Attribute domain module coding requirements
        
        2.2.1.4.3.8.2: XSD schema specialization module coding requirements
        
        2.2.1.4.3.8.2.1: General element type declaration coding requirements
        
        2.2.1.4.3.8.2.2: Structural specialization coding requirements
        
        2.2.1.4.3.8.2.3: Attribute domain coding requirements
    - 2.2.1.4.4: Constraints
      - 2.2.1.4.4.1: Constraint module DTD coding requirements
      - 2.2.1.4.4.2: Constraint module XSD coding requirements
      - 2.2.1.4.4.3: Conref and generalization for constraint modules
      - 2.2.1.4.4.4: Examples of constraint declaration modules
- 2.2.2: Technical content architecture
  - 2.2.2.1: Overview of the DITA 1.2 Specification: Technical Content
  - 2.2.2.2: Technical content: Document and information types
    - 2.2.2.2.1: Concept topic
    - 2.2.2.2.2: Reference topic
    - 2.2.2.2.3: General task topic
    - 2.2.2.2.4: Task topic (strict task)
    - 2.2.2.2.5: Machinery Task topic
    - 2.2.2.2.6: Glossary entry topic
    - 2.2.2.2.7: Glossary group topic
    - 2.2.2.2.8: Bookmap
  - 2.2.2.3: Topic domains: Technical content
  - 2.2.2.4: The xNAL domain
- 2.2.3: Learning and training architecture
  - 2.2.3.1: Overview
  - 2.2.3.2: Objectives of the DITA Learning and Training Specialization
  - 2.2.3.3: A learning objects approach to learning and training content
  - 2.2.3.4: Use cases
  - 2.2.3.5: Summary of learning topic, map, and domain designs
Chapter 3: Language reference
- 3.3.1: Base elements
  - 3.3.1.1: Topic elements
    - 3.3.1.1.1: Basic topic elements
      - 3.3.1.1.1.1: topic
      - 3.3.1.1.1.2: title
      - 3.3.1.1.1.3: titlealts
      - 3.3.1.1.1.4: searchtitle
      - 3.3.1.1.1.5: navtitle
      - 3.3.1.1.1.6: shortdesc
      - 3.3.1.1.1.7: abstract
      - 3.3.1.1.1.8: body
      - 3.3.1.1.1.9: bodydiv
      - 3.3.1.1.1.10: related-links
      - 3.3.1.1.1.11: dita
    - 3.3.1.1.2: Body elements
      - 3.3.1.1.2.1: alt
      - 3.3.1.1.2.2: cite
      - 3.3.1.1.2.3: dd
      - 3.3.1.1.2.4: desc
      - 3.3.1.1.2.5: ddhd
      - 3.3.1.1.2.6: dl
      - 3.3.1.1.2.7: dlentry
      - 3.3.1.1.2.8: dlhead
      - 3.3.1.1.2.9: dt
      - 3.3.1.1.2.10: draft-comment
      - 3.3.1.1.2.11: dthd
      - 3.3.1.1.2.12: example
      - 3.3.1.1.2.13: fig
      - 3.3.1.1.2.14: figgroup
      - 3.3.1.1.2.15: fn
      - 3.3.1.1.2.16: image
      - 3.3.1.1.2.17: keyword
      - 3.3.1.1.2.18: li
      - 3.3.1.1.2.19: lines
      - 3.3.1.1.2.20: longdescref
      - 3.3.1.1.2.21: longquoteref
      - 3.3.1.1.2.22: lq
      - 3.3.1.1.2.23: object
      - 3.3.1.1.2.24: note
      - 3.3.1.1.2.25: ol
      - 3.3.1.1.2.26: p
      - 3.3.1.1.2.27: param
      - 3.3.1.1.2.28: ph
      - 3.3.1.1.2.29: pre
      - 3.3.1.1.2.30: q
      - 3.3.1.1.2.31: section
      - 3.3.1.1.2.32: sectiondiv
      - 3.3.1.1.2.33: sl
      - 3.3.1.1.2.34: sli
      - 3.3.1.1.2.35: term
      - 3.3.1.1.2.36: text
      - 3.3.1.1.2.37: tm
      - 3.3.1.1.2.38: ul
      - 3.3.1.1.2.39: xref
    - 3.3.1.1.3: Table elements
      - 3.3.1.1.3.1: table
      - 3.3.1.1.3.2: tgroup
      - 3.3.1.1.3.3: colspec
      - 3.3.1.1.3.4: thead
      - 3.3.1.1.3.5: tbody
      - 3.3.1.1.3.6: row
      - 3.3.1.1.3.7: entry
      - 3.3.1.1.3.8: simpletable
      - 3.3.1.1.3.9: sthead
      - 3.3.1.1.3.10: strow
      - 3.3.1.1.3.11: stentry
    - 3.3.1.1.4: Related links elements
      - 3.3.1.1.4.1: link
      - 3.3.1.1.4.2: linklist
      - 3.3.1.1.4.3: linkpool
      - 3.3.1.1.4.4: linktext
      - 3.3.1.1.4.5: linkinfo
  - 3.3.1.2: Map elements
    - 3.3.1.2.1: Basic map elements
      - 3.3.1.2.1.1: map
      - 3.3.1.2.1.2: topicref
      - 3.3.1.2.1.3: topicmeta
      - 3.3.1.2.1.4: anchor
      - 3.3.1.2.1.5: navref
      - 3.3.1.2.1.6: reltable
      - 3.3.1.2.1.7: relrow
      - 3.3.1.2.1.8: relcell
      - 3.3.1.2.1.9: relheader
      - 3.3.1.2.1.10: relcolspec
    - 3.3.1.2.2: Map group elements
      - 3.3.1.2.2.1: anchorref
      - 3.3.1.2.2.2: keydef
      - 3.3.1.2.2.3: mapref
      - 3.3.1.2.2.4: topicgroup
      - 3.3.1.2.2.5: topichead
      - 3.3.1.2.2.6: topicset
      - 3.3.1.2.2.7: topicsetref
  - 3.3.1.3: Metadata elements
    - 3.3.1.3.1: Prolog (metadata) elements
      - 3.3.1.3.1.1: prolog
      - 3.3.1.3.1.2: audience
      - 3.3.1.3.1.3: author
      - 3.3.1.3.1.4: brand
      - 3.3.1.3.1.5: category
      - 3.3.1.3.1.6: component
      - 3.3.1.3.1.7: copyright
      - 3.3.1.3.1.8: copyrholder
      - 3.3.1.3.1.9: copyryear
      - 3.3.1.3.1.10: created
      - 3.3.1.3.1.11: critdates
      - 3.3.1.3.1.12: featnum
      - 3.3.1.3.1.13: keywords
      - 3.3.1.3.1.14: metadata
      - 3.3.1.3.1.15: othermeta
      - 3.3.1.3.1.16: permissions
      - 3.3.1.3.1.17: platform
      - 3.3.1.3.1.18: prodinfo
      - 3.3.1.3.1.19: prodname
      - 3.3.1.3.1.20: prognum
      - 3.3.1.3.1.21: publisher
      - 3.3.1.3.1.22: resourceid
      - 3.3.1.3.1.23: revised
      - 3.3.1.3.1.24: series
      - 3.3.1.3.1.25: source
      - 3.3.1.3.1.26: vrmlist
      - 3.3.1.3.1.27: vrm
    - 3.3.1.3.2: Indexing group elements
      - 3.3.1.3.2.1: indexterm
      - 3.3.1.3.2.2: indextermref
      - 3.3.1.3.2.3: index-see
      - 3.3.1.3.2.4: index-see-also
      - 3.3.1.3.2.5: index-sort-as
    - 3.3.1.3.3: Delayed conref resolution elements
      - 3.3.1.3.3.1: exportanchors
      - 3.3.1.3.3.2: anchorid
      - 3.3.1.3.3.3: anchorkey
  - 3.3.1.4: Domain elements
    - 3.3.1.4.1: Hazard statement elements
      - 3.3.1.4.1.1: hazardstatement
      - 3.3.1.4.1.2: consequence
      - 3.3.1.4.1.3: hazardsymbol
      - 3.3.1.4.1.4: howtoavoid
      - 3.3.1.4.1.5: messagepanel
      - 3.3.1.4.1.6: typeofhazard
    - 3.3.1.4.2: Typographic elements
      - 3.3.1.4.2.1: b
      - 3.3.1.4.2.2: i
      - 3.3.1.4.2.3: sup
      - 3.3.1.4.2.4: sub
      - 3.3.1.4.2.5: tt
      - 3.3.1.4.2.6: u
    - 3.3.1.4.3: Utilities elements
      - 3.3.1.4.3.1: area
      - 3.3.1.4.3.2: coords
      - 3.3.1.4.3.3: imagemap
      - 3.3.1.4.3.4: shape
  - 3.3.1.5: Classification elements
    - 3.3.1.5.1: Subject scheme maps
      - 3.3.1.5.1.1: subjectScheme
      - 3.3.1.5.1.2: schemeref
      - 3.3.1.5.1.3: hasInstance
      - 3.3.1.5.1.4: hasKind
      - 3.3.1.5.1.5: hasNarrower
      - 3.3.1.5.1.6: hasPart
      - 3.3.1.5.1.7: hasRelated
      - 3.3.1.5.1.8: enumerationdef
      - 3.3.1.5.1.9: elementdef
      - 3.3.1.5.1.10: attributedef
      - 3.3.1.5.1.11: defaultSubject
      - 3.3.1.5.1.12: subjectHead
      - 3.3.1.5.1.13: subjectHeadMeta
      - 3.3.1.5.1.14: subjectdef
      - 3.3.1.5.1.15: relatedSubjects
      - 3.3.1.5.1.16: subjectRelTable
      - 3.3.1.5.1.17: subjectRelHeader
      - 3.3.1.5.1.18: subjectRel
      - 3.3.1.5.1.19: subjectRole
    - 3.3.1.5.2: Classification domain elements
      - 3.3.1.5.2.1: subjectref
      - 3.3.1.5.2.2: topicapply
      - 3.3.1.5.2.3: topicsubject
      - 3.3.1.5.2.4: topicSubjectTable
      - 3.3.1.5.2.5: topicSubjectHeader
      - 3.3.1.5.2.6: topicSubjectRow
      - 3.3.1.5.2.7: topicCell
      - 3.3.1.5.2.8: subjectCell
  - 3.3.1.6: Specialization elements
    - 3.3.1.6.1: boolean
    - 3.3.1.6.2: data
    - 3.3.1.6.3: data-about
    - 3.3.1.6.4: foreign
    - 3.3.1.6.5: index-base
    - 3.3.1.6.6: itemgroup
    - 3.3.1.6.7: no-topic-nesting
    - 3.3.1.6.8: state
    - 3.3.1.6.9: unknown
  - 3.3.1.7: Legacy conversion elements
    - 3.3.1.7.1: required-cleanup
  - 3.3.1.8: DITAVAL elements
    - 3.3.1.8.1: val
    - 3.3.1.8.2: style-conflict
    - 3.3.1.8.3: prop
    - 3.3.1.8.4: revprop
    - 3.3.1.8.5: startflag
    - 3.3.1.8.6: endflag
    - 3.3.1.8.7: alt-text
- 3.3.2: Technical content elements
  - 3.3.2.1: Concept elements
    - 3.3.2.1.1: concept
    - 3.3.2.1.2: conbody
    - 3.3.2.1.3: conbodydiv
  - 3.3.2.2: Task elements
    - 3.3.2.2.1: task
    - 3.3.2.2.2: taskbody
    - 3.3.2.2.3: prereq
    - 3.3.2.2.4: context
    - 3.3.2.2.5: steps
    - 3.3.2.2.6: steps-informal
    - 3.3.2.2.7: steps-unordered
    - 3.3.2.2.8: step
    - 3.3.2.2.9: stepsection
    - 3.3.2.2.10: cmd
    - 3.3.2.2.11: info
    - 3.3.2.2.12: substeps
    - 3.3.2.2.13: substep
    - 3.3.2.2.14: stepxmp
    - 3.3.2.2.15: choicetable
    - 3.3.2.2.16: chhead
    - 3.3.2.2.17: choptionhd
    - 3.3.2.2.18: chdeschd
    - 3.3.2.2.19: chrow
    - 3.3.2.2.20: choption
    - 3.3.2.2.21: chdesc
    - 3.3.2.2.22: choices
    - 3.3.2.2.23: choice
    - 3.3.2.2.24: stepresult
    - 3.3.2.2.25: tutorialinfo
    - 3.3.2.2.26: result
    - 3.3.2.2.27: postreq
  - 3.3.2.3: Reference elements
    - 3.3.2.3.1: reference
    - 3.3.2.3.2: refbody
    - 3.3.2.3.3: refbodydiv
    - 3.3.2.3.4: refsyn
    - 3.3.2.3.5: properties
    - 3.3.2.3.6: prophead
    - 3.3.2.3.7: proptypehd
    - 3.3.2.3.8: propvaluehd
    - 3.3.2.3.9: propdeschd
    - 3.3.2.3.10: property
    - 3.3.2.3.11: proptype
    - 3.3.2.3.12: propvalue
    - 3.3.2.3.13: propdesc
  - 3.3.2.4: Glossary elements
    - 3.3.2.4.1: Glossentry elements
      - 3.3.2.4.1.1: glossentry
      - 3.3.2.4.1.2: glossterm
      - 3.3.2.4.1.3: glossdef
      - 3.3.2.4.1.4: glossAbbreviation
      - 3.3.2.4.1.5: glossAcronym
      - 3.3.2.4.1.6: glossAlt
      - 3.3.2.4.1.7: glossAlternateFor
      - 3.3.2.4.1.8: glossBody
      - 3.3.2.4.1.9: glossPartOfSpeech
      - 3.3.2.4.1.10: glossProperty
      - 3.3.2.4.1.11: glossScopeNote
      - 3.3.2.4.1.12: glossShortForm
      - 3.3.2.4.1.13: glossStatus
      - 3.3.2.4.1.14: glossSurfaceForm
      - 3.3.2.4.1.15: glossSymbol
      - 3.3.2.4.1.16: glossSynonym
      - 3.3.2.4.1.17: glossUsage
    - 3.3.2.4.2: Glossary related elements
      - 3.3.2.4.2.1: abbreviated-form
      - 3.3.2.4.2.2: glossref
      - 3.3.2.4.2.3: glossgroup
  - 3.3.2.5: Bookmap elements
    - 3.3.2.5.1: Bookmap content elements
      - 3.3.2.5.1.1: bookmap
      - 3.3.2.5.1.2: abbrevlist
      - 3.3.2.5.1.3: amendments
      - 3.3.2.5.1.4: appendices
      - 3.3.2.5.1.5: appendix
      - 3.3.2.5.1.6: backmatter
      - 3.3.2.5.1.7: bibliolist
      - 3.3.2.5.1.8: bookabstract
      - 3.3.2.5.1.9: booklibrary
      - 3.3.2.5.1.10: booklist
      - 3.3.2.5.1.11: booklists
      - 3.3.2.5.1.12: booktitle
      - 3.3.2.5.1.13: booktitlealt
      - 3.3.2.5.1.14: chapter
      - 3.3.2.5.1.15: colophon
      - 3.3.2.5.1.16: dedication
      - 3.3.2.5.1.17: draftintro
      - 3.3.2.5.1.18: figurelist
      - 3.3.2.5.1.19: frontmatter
      - 3.3.2.5.1.20: glossarylist
      - 3.3.2.5.1.21: indexlist
      - 3.3.2.5.1.22: mainbooktitle
      - 3.3.2.5.1.23: notices
      - 3.3.2.5.1.24: part
      - 3.3.2.5.1.25: preface
      - 3.3.2.5.1.26: tablelist
      - 3.3.2.5.1.27: toc
      - 3.3.2.5.1.28: trademarklist
    - 3.3.2.5.2: Bookmap metadata elements
      - 3.3.2.5.2.1: bookmeta
      - 3.3.2.5.2.2: approved
      - 3.3.2.5.2.3: bookchangehistory
      - 3.3.2.5.2.4: bookevent
      - 3.3.2.5.2.5: bookeventtype
      - 3.3.2.5.2.6: bookid
      - 3.3.2.5.2.7: booknumber
      - 3.3.2.5.2.8: bookowner
      - 3.3.2.5.2.9: bookpartno
      - 3.3.2.5.2.10: bookrestriction
      - 3.3.2.5.2.11: bookrights
      - 3.3.2.5.2.12: completed
      - 3.3.2.5.2.13: copyrfirst
      - 3.3.2.5.2.14: copyrlast
      - 3.3.2.5.2.15: day
      - 3.3.2.5.2.16: edited
      - 3.3.2.5.2.17: edition
      - 3.3.2.5.2.18: isbn
      - 3.3.2.5.2.19: maintainer
      - 3.3.2.5.2.20: month
      - 3.3.2.5.2.21: organization
      - 3.3.2.5.2.22: person
      - 3.3.2.5.2.23: printlocation
      - 3.3.2.5.2.24: published
      - 3.3.2.5.2.25: publisherinformation
      - 3.3.2.5.2.26: publishtype
      - 3.3.2.5.2.27: reviewed
      - 3.3.2.5.2.28: revisionid
      - 3.3.2.5.2.29: started
      - 3.3.2.5.2.30: summary
      - 3.3.2.5.2.31: tested
      - 3.3.2.5.2.32: volume
      - 3.3.2.5.2.33: year
  - 3.3.2.6: Domain elements
    - 3.3.2.6.1: Task requirements domain
      - 3.3.2.6.1.1: prelreqs
      - 3.3.2.6.1.2: closereqs
      - 3.3.2.6.1.3: reqconds
      - 3.3.2.6.1.4: reqcond
      - 3.3.2.6.1.5: noconds
      - 3.3.2.6.1.6: reqcontp
      - 3.3.2.6.1.7: reqpers
      - 3.3.2.6.1.8: personnel
      - 3.3.2.6.1.9: perscat
      - 3.3.2.6.1.10: perskill
      - 3.3.2.6.1.11: esttime
      - 3.3.2.6.1.12: supeqli
      - 3.3.2.6.1.13: supequi
      - 3.3.2.6.1.14: supequip
      - 3.3.2.6.1.15: nosupeq
      - 3.3.2.6.1.16: supplies
      - 3.3.2.6.1.17: supply
      - 3.3.2.6.1.18: supplyli
      - 3.3.2.6.1.19: nosupply
      - 3.3.2.6.1.20: spare
      - 3.3.2.6.1.21: spares
      - 3.3.2.6.1.22: sparesli
      - 3.3.2.6.1.23: nospares
      - 3.3.2.6.1.24: nosafety
      - 3.3.2.6.1.25: safecond
      - 3.3.2.6.1.26: safety
    - 3.3.2.6.2: Programming elements
      - 3.3.2.6.2.1: apiname
      - 3.3.2.6.2.2: codeblock
      - 3.3.2.6.2.3: coderef
      - 3.3.2.6.2.4: codeph
      - 3.3.2.6.2.5: option
      - 3.3.2.6.2.6: parmname
      - 3.3.2.6.2.7: parml
      - 3.3.2.6.2.8: plentry
      - 3.3.2.6.2.9: pt
      - 3.3.2.6.2.10: pd
      - 3.3.2.6.2.11: synph
      - 3.3.2.6.2.12: syntaxdiagram
      - 3.3.2.6.2.13: groupseq
      - 3.3.2.6.2.14: groupchoice
      - 3.3.2.6.2.15: groupcomp
      - 3.3.2.6.2.16: fragment
      - 3.3.2.6.2.17: fragref
      - 3.3.2.6.2.18: synblk
      - 3.3.2.6.2.19: synnote
      - 3.3.2.6.2.20: synnoteref
      - 3.3.2.6.2.21: kwd
      - 3.3.2.6.2.22: var
      - 3.3.2.6.2.23: oper
      - 3.3.2.6.2.24: delim
      - 3.3.2.6.2.25: sep
      - 3.3.2.6.2.26: repsep
    - 3.3.2.6.3: Software elements
      - 3.3.2.6.3.1: msgph
      - 3.3.2.6.3.2: msgblock
      - 3.3.2.6.3.3: msgnum
      - 3.3.2.6.3.4: cmdname
      - 3.3.2.6.3.5: varname
      - 3.3.2.6.3.6: filepath
      - 3.3.2.6.3.7: userinput
      - 3.3.2.6.3.8: systemoutput
    - 3.3.2.6.4: User interface elements
      - 3.3.2.6.4.1: uicontrol
      - 3.3.2.6.4.2: wintitle
      - 3.3.2.6.4.3: menucascade
      - 3.3.2.6.4.4: shortcut
      - 3.3.2.6.4.5: screen
    - 3.3.2.6.5: xNAL domain elements
      - 3.3.2.6.5.1: xNAL usage guidelines
      - 3.3.2.6.5.2: authorinformation
      - 3.3.2.6.5.3: addressdetails
      - 3.3.2.6.5.4: administrativearea
      - 3.3.2.6.5.5: contactnumber
      - 3.3.2.6.5.6: contactnumbers
      - 3.3.2.6.5.7: country
      - 3.3.2.6.5.8: emailaddress
      - 3.3.2.6.5.9: emailaddresses
      - 3.3.2.6.5.10: firstname
      - 3.3.2.6.5.11: generationidentifier
      - 3.3.2.6.5.12: honorific
      - 3.3.2.6.5.13: lastname
      - 3.3.2.6.5.14: locality
      - 3.3.2.6.5.15: localityname
      - 3.3.2.6.5.16: middlename
      - 3.3.2.6.5.17: namedetails
      - 3.3.2.6.5.18: organizationinfo
      - 3.3.2.6.5.19: organizationname
      - 3.3.2.6.5.20: organizationnamedetails
      - 3.3.2.6.5.21: otherinfo
      - 3.3.2.6.5.22: personinfo
      - 3.3.2.6.5.23: personname
      - 3.3.2.6.5.24: postalcode
      - 3.3.2.6.5.25: thoroughfare
      - 3.3.2.6.5.26: url
      - 3.3.2.6.5.27: urls
- 3.3.3: Learning and training elements
  - 3.3.3.1: Learning and training topic elements
    - 3.3.3.1.1: learningOverview
    - 3.3.3.1.2: learningOverviewbody
    - 3.3.3.1.3: learningContent
    - 3.3.3.1.4: learningContentbody
    - 3.3.3.1.5: learningSummary
    - 3.3.3.1.6: learningSummarybody
    - 3.3.3.1.7: learningAssessment
    - 3.3.3.1.8: learningAssessmentbody
    - 3.3.3.1.9: learningPlan
    - 3.3.3.1.10: learningPlanbody
    - 3.3.3.1.11: learningBase
    - 3.3.3.1.12: learningBasebody
  - 3.3.3.2: Learning and training map domain elements
    - 3.3.3.2.1: learningGroup
    - 3.3.3.2.2: learningObject
    - 3.3.3.2.3: learningPlanRef
    - 3.3.3.2.4: learningPreAssessmentRef
    - 3.3.3.2.5: learningOverviewRef
    - 3.3.3.2.6: learningContentRef
    - 3.3.3.2.7: learningContentComponentRef
    - 3.3.3.2.8: learningSummaryRef
    - 3.3.3.2.9: learningPostAssessmentRef
  - 3.3.3.3: Learning and training interactions domain elements
    - 3.3.3.3.1: lcInstructornote
    - 3.3.3.3.2: DITA learning interaction base domain elements
      - 3.3.3.3.2.1: lcInteractionBase
      - 3.3.3.3.2.2: lcQuestionBase
      - 3.3.3.3.2.3: lcOpenQuestion
      - 3.3.3.3.2.4: lcTrueFalse
      - 3.3.3.3.2.5: lcSingleSelect
      - 3.3.3.3.2.6: lcMultipleSelect
      - 3.3.3.3.2.7: lcSequencing
      - 3.3.3.3.2.8: lcMatching
      - 3.3.3.3.2.9: lcHotspot
  - 3.3.3.4: Learning and training metadata elements
    - 3.3.3.4.1: lcLom
    - 3.3.3.4.2: lomAggregationLevel
    - 3.3.3.4.3: lomContext
    - 3.3.3.4.4: lomCoverage
    - 3.3.3.4.5: lomDifficulty
    - 3.3.3.4.6: lomInstallationRemarks
    - 3.3.3.4.7: lomIntendedUserRole
    - 3.3.3.4.8: lomInteractivityLevel
    - 3.3.3.4.9: lomInteractivityType
    - 3.3.3.4.10: lomLearningResourceType
    - 3.3.3.4.11: lomOtherPlatformRequirements
    - 3.3.3.4.12: lomSemanticDensity
    - 3.3.3.4.13: lomStructure
    - 3.3.3.4.14: lomTechRequirement
    - 3.3.3.4.15: lomTypicalAgeRange
    - 3.3.3.4.16: lomTypicalLearningTime
  - 3.3.3.5: Other learning and training elements
    - 3.3.3.5.1: Common learning interactions elements
      - 3.3.3.5.1.1: lcAnswerContent
      - 3.3.3.5.1.2: lcAnswerOption
      - 3.3.3.5.1.3: lcAnswerOptionGroup
      - 3.3.3.5.1.4: lcArea
      - 3.3.3.5.1.5: lcAreaCoords
      - 3.3.3.5.1.6: lcAreaShape
      - 3.3.3.5.1.7: lcAsset
      - 3.3.3.5.1.8: lcCorrectResponse
      - 3.3.3.5.1.9: lcFeedback
      - 3.3.3.5.1.10: lcFeedbackCorrect
      - 3.3.3.5.1.11: lcFeedbackIncorrect
      - 3.3.3.5.1.12: lcHotspotMap
      - 3.3.3.5.1.13: lcItem
      - 3.3.3.5.1.14: lcMatchingHeader
      - 3.3.3.5.1.15: lcMatchingItem
      - 3.3.3.5.1.16: lcMatchingItemFeedback
      - 3.3.3.5.1.17: lcMatchingPair
      - 3.3.3.5.1.18: lcMatchTable
      - 3.3.3.5.1.19: lcOpenAnswer
      - 3.3.3.5.1.20: lcQuestion
      - 3.3.3.5.1.21: lcSequence
      - 3.3.3.5.1.22: lcSequenceOption
      - 3.3.3.5.1.23: lcSequenceOptionGroup
    - 3.3.3.5.2: Common learning content elements
      - 3.3.3.5.2.1: lcAge
      - 3.3.3.5.2.2: lcAssessment
      - 3.3.3.5.2.3: lcAttitude
      - 3.3.3.5.2.4: lcAudience
      - 3.3.3.5.2.5: lcBackground
      - 3.3.3.5.2.6: lcChallenge
      - 3.3.3.5.2.7: lcCIN
      - 3.3.3.5.2.8: lcClassroom
      - 3.3.3.5.2.9: lcClient
      - 3.3.3.5.2.10: lcConstraints
      - 3.3.3.5.2.11: lcDelivDate
      - 3.3.3.5.2.12: lcDelivery
      - 3.3.3.5.2.13: lcDownloadTime
      - 3.3.3.5.2.14: lcDuration
      - 3.3.3.5.2.15: lcEdLevel
      - 3.3.3.5.2.16: lcFileSizeLimitations
      - 3.3.3.5.2.17: lcGapAnalysis
      - 3.3.3.5.2.18: lcGapItem
      - 3.3.3.5.2.19: lcGapItemDelta
      - 3.3.3.5.2.20: lcGeneralDescription
      - 3.3.3.5.2.21: lcGoals
      - 3.3.3.5.2.22: lcGraphics
      - 3.3.3.5.2.23: lcHandouts
      - 3.3.3.5.2.24: lcInstruction
      - 3.3.3.5.2.25: lcInteraction
      - 3.3.3.5.2.26: lcIntervention
      - 3.3.3.5.2.27: lcInterventionItem
      - 3.3.3.5.2.28: lcIntro
      - 3.3.3.5.2.29: lcJtaItem
      - 3.3.3.5.2.30: lcKnowledge
      - 3.3.3.5.2.31: lcLearnStrat
      - 3.3.3.5.2.32: lcLMS
      - 3.3.3.5.2.33: lcModDate
      - 3.3.3.5.2.34: lcMotivation
      - 3.3.3.5.2.35: lcNeeds
      - 3.3.3.5.2.36: lcNeedsAnalysis
      - 3.3.3.5.2.37: lcNextSteps
      - 3.3.3.5.2.38: lcNoLMS
      - 3.3.3.5.2.39: lcObjective
      - 3.3.3.5.2.40: lcObjectives
      - 3.3.3.5.2.41: lcObjectivesGroup
      - 3.3.3.5.2.42: lcObjectivesStem
      - 3.3.3.5.2.43: lcOJT
      - 3.3.3.5.2.44: lcOrganizational
      - 3.3.3.5.2.45: lcOrgConstraints
      - 3.3.3.5.2.46: lcPlanAudience
      - 3.3.3.5.2.47: lcPlanDescrip
      - 3.3.3.5.2.48: lcPlanObjective
      - 3.3.3.5.2.49: lcPlanPrereqs
      - 3.3.3.5.2.50: lcPlanResources
      - 3.3.3.5.2.51: lcPlanSubject
      - 3.3.3.5.2.52: lcPlanTitle
      - 3.3.3.5.2.53: lcPlayers
      - 3.3.3.5.2.54: lcPrereqs
      - 3.3.3.5.2.55: lcProcesses
      - 3.3.3.5.2.56: lcProject
      - 3.3.3.5.2.57: lcResolution
      - 3.3.3.5.2.58: lcResources
      - 3.3.3.5.2.59: lcReview
      - 3.3.3.5.2.60: lcSecurity
      - 3.3.3.5.2.61: lcSkills
      - 3.3.3.5.2.62: lcSpecChars
      - 3.3.3.5.2.63: lcSummary
      - 3.3.3.5.2.64: lcTask
      - 3.3.3.5.2.65: lcTaskItem
      - 3.3.3.5.2.66: lcTechnical
      - 3.3.3.5.2.67: lcTime
      - 3.3.3.5.2.68: lcValues
      - 3.3.3.5.2.69: lcViewers
      - 3.3.3.5.2.70: lcW3C
      - 3.3.3.5.2.71: lcWorkEnv
      - 3.3.3.5.2.72: lcWorkEnvDescription
- 3.3.4: Attributes
  - 3.3.4.1: Commonly referenced attribute groups
    - 3.3.4.1.1: display-atts attribute group
    - 3.3.4.1.2: global-atts attribute group
    - 3.3.4.1.3: univ-atts attribute group
    - 3.3.4.1.4: id-atts attribute group
    - 3.3.4.1.5: select-atts attribute group
    - 3.3.4.1.6: localization-atts attribute group
    - 3.3.4.1.7: relational-atts attribute group
      - 3.3.4.1.7.1: rel-atts attribute group
    - 3.3.4.1.8: topicref-atts, topicref-atts-no-toc, and topicref-atts-without-format attribute groups
    - 3.3.4.1.9: Other common DITA attributes
  - 3.3.4.2: Complex attribute definitions
    - 3.3.4.2.1: The href attribute
    - 3.3.4.2.2: The keys attribute
    - 3.3.4.2.3: The keyref attribute
    - 3.3.4.2.4: The conref attribute
      - 3.3.4.2.4.1: Using the -dita-use-conref-target value
    - 3.3.4.2.5: The conaction attribute
    - 3.3.4.2.6: The conrefend attribute
    - 3.3.4.2.7: The conkeyref attribute
    - 3.3.4.2.8: The type attribute
    - 3.3.4.2.9: The format attribute
    - 3.3.4.2.10: The scope attribute
    - 3.3.4.2.11: The role attribute
- 3.3.5: Element quick reference
  - 3.3.5.1: Base DITA elements, A to Z
  - 3.3.5.2: Technical content elements, A to Z
  - 3.3.5.3: Learning and training elements, A to Z
  - 3.3.5.4: All DITA 1.2 elements, A to Z
Chapter 4: Conformance
Appendix A: Acknowledgments
Appendix B: Non-normative information
- B.6.1 Changes from previous versions
  - Changes from DITA 1.1 to DITA 1.2
  - Changes from DITA 1.0 to DITA 1.1
- B.6.2 Migrating from DITA 1.1 to 1.2
- B.6.3 DITA MIME type
- B.6.4 Considerations for generalizing <foreign> elements
- B.6.5 Element-by-element recommendations for translators
- B.6.6 DITA module and shell implementation reference
- B.6.7 DTD organization
- B.6.8 XML schema organization
- B.6.9 Processing component modularization and naming conventions
- B.6.10 Processing interoperability considerations
- B.6.11 Specialization design, customization, and the limits of specialization

Table of Contents

DITA Resource Center

Element domain module coding requirements

An element domain vocabulary module defines element types that are appropriate for the subject-matter or application domain for which they are designed. The purpose is usually to enhance the user's interaction by providing semantic elements whose names more accurately denote their content, making that content easier to search and retrieve.

Domain entity file

In addition to the domain declaration entity, the entity declaration file for element domain modules must include the following components:

Element extension entity

The declaration (.ent) file must define an entity for each element extended by the domain. The base of the entity name is the abbreviation for the domain and the extension of the entity name is the name of the extended element. For example, the highlight domain (abbreviated as hi-d) extends the ph element, so the entity for the extended element is named hi-d-ph.

The value of the entity is a disjunctive list of the specialized elements that are intended to occur in the same locations as the extended element.

For example, the hi-d-ph entity is defined as follows:

<!ENTITY % hi-d-ph "b | u | i | tt | sup | sub">

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