[oXygen XML Editor Blog] - DITA Inheritance Hierarchy

Posted: 24 Apr 2017 02:20 PM PDT

The DITA standard is based on this concept of inheritance which allows extending or restricting the vocabulary while allowing the XML content to still be regarded as valid DITA. Even in the DITA standard there are various element which are specializations of others (for example "b" is a specialization of ph"). The XSLT styesheets which are used for publishing match all DITA elements by the value of their @class attribute so knowing how elements may extend each other may be useful when customizing the DITA XSLTs.

A DITA inheritance hierarchy list for the base DITA specification is presented below. Would you consider it useful if a future version of Oxygen would have some kind of a tool to show such hierarchies even for custom DITA specializations?

topic/copyryear
topic/foreign
- mathml-d/mathml
- svg-d/svg-container
topic/author
topic/example
topic/unknown
topic/titlealts
topic/linktext
topic/category
topic/data
- relmgmt-d/change-request-reference
- relmgmt-d/change-person
- relmgmt-d/change-request-id
- relmgmt-d/change-request-system
- relmgmt-d/change-completed
- relmgmt-d/change-started
- ut-d/sort-as
- relmgmt-d/change-item
- relmgmt-d/change-organization
- relmgmt-d/change-summary
- concept/data
  - glossentry/glossPartOfSpeech
  - glossentry/glossProperty
  - glossentry/glossStatus
- relmgmt-d/change-revisionid
topic/longdescref
topic/audience
topic/abstract
- concept/abstract
  - glossentry/glossdef
topic/related-links
topic/body
- task/taskbody
- concept/conbody
  - glossentry/glossBody
- troubleshooting/troublebody
- reference/refbody
topic/ph
- hi-d/overline
- hi-d/line-through
- hi-d/sub
- pr-d/sep
- equation-d/equation-inline
- pr-d/repsep
- equation-d/equation-number
- hi-d/tt
- task/cmd
- pr-d/synph
- sw-d/userinput
- ut-d/coords
- pr-d/oper
- hi-d/sup
- pr-d/var
- sw-d/msgph
- pr-d/codeph
- ui-d/uicontrol
- hi-d/i
- hi-d/u
- sw-d/filepath
- sw-d/systemoutput
- pr-d/delim
- hi-d/b
- ui-d/menucascade
topic/object
topic/fig
- ut-d/imagemap
- pr-d/syntaxdiagram
- equation-d/equation-figure
topic/featnum
topic/lines
topic/brand
topic/state
topic/source
topic/link
topic/vrm
topic/sli
topic/navtitle
topic/figgroup
- pr-d/synblk
- pr-d/fragment
- ut-d/area
- pr-d/groupcomp
- pr-d/groupseq
- pr-d/groupchoice
topic/note
- hazard-d/hazardstatement
- concept/note
  - glossentry/glossScopeNote
  - glossentry/glossUsage
topic/ol
- task/substeps
- task/steps
topic/stentry
- task/choption
- reference/propvalue
- reference/propvaluehd
- reference/propdeschd
- reference/propdesc
- reference/proptype
- reference/proptypehd
- task/choptionhd
- task/chdesc
- task/chdeschd
topic/dlentry
- pr-d/plentry
topic/vrmlist
topic/entry
topic/fn
- pr-d/synnote
topic/xref
- mathml-d/mathmlref
- svg-d/svgref
- concept/xref
  - glossentry/glossAlternateFor
- pr-d/synnoteref
- pr-d/fragref
- pr-d/coderef
topic/component
topic/series
topic/bodydiv
- reference/refbodydiv
- troubleshooting/troubleSolution
- concept/conbodydiv
topic/data-about
topic/tgroup
topic/keywords
topic/boolean
topic/critdates
topic/strow
- task/chrow
- reference/property
topic/simpletable
- reference/properties
- task/choicetable
topic/linklist
topic/revised
topic/table
topic/dt
- pr-d/pt
topic/image
- hazard-d/hazardsymbol
- concept/image
  - glossentry/glossSymbol
topic/ul
- hazard-d/messagepanel
- task/choices
- task/steps-unordered
topic/p
- concept/p
  - glossentry/glossSurfaceForm
- troubleshooting/responsibleParty
topic/q
topic/linkinfo
topic/dd
- pr-d/pd
topic/lq
topic/prodinfo
topic/dl
- pr-d/parml
topic/prolog
topic/indextermref
topic/copyright
topic/div
- equation-d/equation-block
topic/sthead
- task/chhead
- reference/prophead
topic/tbody
topic/searchtitle
topic/colspec
topic/created
topic/tm
topic/text
topic/cite
topic/li
- hazard-d/howtoavoid
- task/step
- task/substep
- hazard-d/consequence
- hazard-d/typeofhazard
- task/choice
- task/stepsection
topic/permissions
topic/no-topic-nesting
topic/dlhead
topic/prodname
topic/index-base
- indexing-d/index-sort-as
- indexing-d/index-see
- indexing-d/index-see-also
topic/indexterm
topic/copyrholder
topic/longquoteref
topic/required-cleanup
topic/ddhd
topic/sl
topic/draft-comment
topic/section
- task/postreq
- task/result
- troubleshooting/remedy
- task/tasktroubleshooting
- concept/section
  - glossentry/glossAlt
- task/context
- troubleshooting/cause
- task/steps-informal
- reference/refsyn
- task/prereq
- troubleshooting/condition
topic/pre
- sw-d/msgblock
- pr-d/codeblock
- ui-d/screen
topic/topic
- troubleshooting/troubleshooting
- concept/concept
  - glossgroup/glossgroup
  - glossentry/glossentry
- reference/reference
- task/task
topic/platform
topic/alt
topic/keyword
- ui-d/shortcut
- markup-d/markupname
  - xml-d/parameterentity
  - xml-d/xmlatt
  - xml-d/numcharref
  - xml-d/xmlpi
  - xml-d/textentity
  - xml-d/xmlnsname
  - xml-d/xmlelement
- pr-d/parmname
- pr-d/option
- sw-d/cmdname
- ui-d/wintitle
- ut-d/shape
- sw-d/varname
- pr-d/apiname
- pr-d/kwd
- sw-d/msgnum
topic/thead
topic/publisher
topic/desc
topic/term
- abbrev-d/abbreviated-form
topic/title
- concept/title
  - glossentry/glossShortForm
  - glossentry/glossAbbreviation
  - glossentry/glossSynonym
  - glossentry/glossterm
  - glossentry/glossAcronym
topic/itemgroup
- task/steptroubleshooting
- task/tutorialinfo
- task/info
- task/stepxmp
- task/stepresult
topic/row
topic/linkpool
topic/param
topic/shortdesc
topic/resourceid
topic/dthd
topic/metadata
- relmgmt-d/change-historylist
topic/othermeta
topic/prognum
topic/sectiondiv