3.1.4.2.4 sub

A subscript (<sub>) indicates that text should be subscripted, or placed lower in relationship to the surrounding text. Subscripted text is often a smaller font than the surrounding text. Formatting may vary depending on your output process. This element is part of the DITA highlighting domain. Use this element only when a more semantically appropriate element is not available.

Contains

Note: These models represent only the default document types distributed by OASIS. Actual content models will differ with each new document type.
Doctype Content model
topic (base), learningAssessment, learningContent, learningOverview, learningPlan, learningSummary ( text data or boolean or cite or keyword or ph or b or i or sup or sub or tt or u or q or term or tm or xref or state or data or data-about or foreign or unknown) (any number)
topic (technical content), concept, ditabase, glossary, glossentry, glossgroup, reference, task ( text data or boolean or cite or keyword or apiname or option or parmname or cmdname or msgnum or varname or wintitle or ph or b or i or sup or sub or tt or u or codeph or synph or filepath or msgph or systemoutput or userinput or menucascade or uicontrol or q or term or abbreviated-form or tm or xref or state or data or data-about or foreign or unknown) (any number)
machineryTask ( text data or boolean or cite or keyword or wintitle or ph or b or i or sup or sub or tt or u or menucascade or uicontrol or q or term or tm or xref or state or data or data-about or foreign or unknown) (any number)

Contained by

Doctype Content model
topic (base) data, title, navtitle, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, alt, stentry, draft-comment, fn, cite, xref, entry, source, searchtitle, abstract, bodydiv, section, sectiondiv, example, linktext, linkinfo, b, u, i, tt, sup, sub, typeofhazard, consequence, howtoavoid
topic (technical content), concept data, title, navtitle, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, alt, stentry, draft-comment, fn, cite, xref, entry, source, searchtitle, abstract, bodydiv, section, sectiondiv, example, linktext, linkinfo, b, u, i, tt, sup, sub, typeofhazard, consequence, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
ditabase data, title, navtitle, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, alt, stentry, draft-comment, fn, cite, xref, entry, source, searchtitle, abstract, bodydiv, section, sectiondiv, example, linktext, linkinfo, prereq, context, steps-informal, stepsection, cmd, info, tutorialinfo, stepxmp, choice, choptionhd, chdeschd, choption, chdesc, stepresult, result, postreq, refsyn, proptypehd, propvaluehd, propdeschd, proptype, propvalue, propdesc, glossterm, glossdef, glossProperty, glossUsage, glossScopeNote, b, u, i, tt, sup, sub, typeofhazard, consequence, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
glossary, glossentry, glossgroup data, title, navtitle, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, alt, stentry, draft-comment, fn, cite, xref, entry, source, searchtitle, abstract, bodydiv, section, sectiondiv, example, linktext, linkinfo, glossterm, glossdef, glossProperty, glossUsage, glossScopeNote, b, u, i, tt, sup, sub, typeofhazard, consequence, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
reference data, title, navtitle, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, alt, stentry, draft-comment, fn, cite, xref, entry, source, searchtitle, abstract, bodydiv, section, sectiondiv, example, linktext, linkinfo, refsyn, proptypehd, propvaluehd, propdeschd, proptype, propvalue, propdesc, b, u, i, tt, sup, sub, typeofhazard, consequence, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
task (strict), task (general) data, title, navtitle, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, alt, stentry, draft-comment, fn, cite, xref, entry, source, searchtitle, abstract, bodydiv, section, sectiondiv, example, linktext, linkinfo, prereq, context, steps-informal, stepsection, cmd, info, tutorialinfo, stepxmp, choice, choptionhd, chdeschd, choption, chdesc, stepresult, result, postreq, b, u, i, tt, sup, sub, typeofhazard, consequence, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
machineryTask data, title, navtitle, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, alt, stentry, draft-comment, fn, cite, xref, entry, source, searchtitle, abstract, bodydiv, section, sectiondiv, example, linktext, linkinfo, prereq, context, steps-informal, stepsection, cmd, info, tutorialinfo, stepxmp, choice, choptionhd, chdeschd, choption, chdesc, stepresult, result, postreq, reqcond, reqcontp, personnel, perscat, perskill, esttime, supequi, supply, spare, safecond, typeofhazard, consequence, howtoavoid, b, u, i, tt, sup, sub, screen
learningAssessment, learningOverview, learningSummary data, title, navtitle, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, alt, stentry, draft-comment, fn, cite, xref, entry, source, searchtitle, abstract, bodydiv, section, sectiondiv, example, linktext, linkinfo, lcIntro, lcObjectivesStem, lcObjective, lcAudience, lcTime, lcPrereqs, lcSummary, lcNextSteps, lcReview, lcResources, lcChallenge, lcInstruction, b, u, i, tt, sup, sub, lcQuestionBase, lcInstructornote, lcQuestion, lcOpenAnswer, lcFeedback, lcFeedbackCorrect, lcFeedbackIncorrect, lcAnswerContent, lcItem, lcMatchingItem
learningContent data, title, navtitle, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, alt, stentry, draft-comment, fn, cite, xref, entry, source, searchtitle, abstract, bodydiv, section, sectiondiv, example, linktext, linkinfo, lcIntro, lcObjectivesStem, lcObjective, lcAudience, lcTime, lcPrereqs, lcSummary, lcNextSteps, lcReview, lcResources, lcChallenge, lcInstruction, prereq, context, steps-informal, stepsection, cmd, info, tutorialinfo, stepxmp, choice, choptionhd, chdeschd, choption, chdesc, stepresult, result, postreq, refsyn, proptypehd, propvaluehd, propdeschd, proptype, propvalue, propdesc, b, u, i, tt, sup, sub, lcQuestionBase, lcInstructornote, lcQuestion, lcOpenAnswer, lcFeedback, lcFeedbackCorrect, lcFeedbackIncorrect, lcAnswerContent, lcItem, lcMatchingItem
learningPlan data, title, navtitle, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, alt, stentry, draft-comment, fn, cite, xref, entry, source, searchtitle, abstract, bodydiv, section, sectiondiv, example, linktext, linkinfo, lcIntro, lcObjectivesStem, lcObjective, lcAudience, lcTime, lcPrereqs, lcSummary, lcNextSteps, lcReview, lcResources, lcChallenge, lcInstruction, lcGeneralDescription, lcGoals, lcNeeds, lcValues, lcOrgConstraints, lcEdLevel, lcAge, lcBackground, lcSkills, lcKnowledge, lcMotivation, lcSpecChars, lcWorkEnvDescription, lcPlanResources, lcProcesses, lcTaskItem, lcAttitude, lcPlanObjective, lcJtaItem, lcGapItemDelta, lcLearnStrat, lcAssessment, lcDelivery, b, u, i, tt, sup, sub, lcQuestionBase, lcInstructornote, lcQuestion, lcOpenAnswer, lcFeedback, lcFeedbackCorrect, lcFeedbackIncorrect, lcAnswerContent, lcItem, lcMatchingItem

Inheritance

+ topic/ph hi-d/sub

Example

The power produced by the electrohydraulic dam was 10<sup>10</sup> more than 
the older electric plant.  The difference was H<sub>2</sub>O.

Attributes

Name Description Data Type Default Value Required?
univ-atts attribute group (includes select-atts, id-atts, and localization-atts groups) A set of related attributes, described in univ-atts attribute group      
global-atts attribute group (xtrf, xtrc) A set of related attributes, described in global-atts attribute group      
class, outputclass Common attributes described in Other common DITA attributes      

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