##### 3.1.6.1 boolean

The <boolean> element was deprecated in DITA version 1.1. It was originally intended to express one of two opposite values, such as yes / no or on / off.

Note: This element is deprecated. It is functionally equivalent to <state value="yes|no"/>, which is recommended as its replacement in all cases.

###### Contains

Doctype | Content model
topic, map, concept, ditabase, glossary, glossentry, glossgroup, reference, task, bookmap, classifyMap, subjectScheme, machineryTask, learningAssessment, learningBookmap, learningContent, learningMap, learningOverview, learningPlan, learningSummary | no content

###### Contained by

Doctype | Content model
topic (base) | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, abstract, bodydiv, section, sectiondiv, example, linkinfo, b, u, i, tt, sup, sub, howtoavoid
map (base), classifyMap, subjectScheme, learningMap | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, b, u, i, tt, sup, sub, howtoavoid
topic (technical content), concept | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, abstract, bodydiv, section, sectiondiv, example, linkinfo, b, u, i, tt, sup, sub, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
map (technical content) | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, b, u, i, tt, sup, sub, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
ditabase | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, abstract, bodydiv, section, sectiondiv, example, 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, glossUsage, glossScopeNote, b, u, i, tt, sup, sub, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
glossary, glossentry, glossgroup | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, abstract, bodydiv, section, sectiondiv, example, linkinfo, glossterm, glossdef, glossUsage, glossScopeNote, b, u, i, tt, sup, sub, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
reference | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, abstract, bodydiv, section, sectiondiv, example, linkinfo, refsyn, proptypehd, propvaluehd, propdeschd, proptype, propvalue, propdesc, b, u, i, tt, sup, sub, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
task (strict), task (general) | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, abstract, bodydiv, section, sectiondiv, example, linkinfo, prereq, context, steps-informal, stepsection, cmd, info, tutorialinfo, stepxmp, choice, choptionhd, chdeschd, choption, chdesc, stepresult, result, postreq, b, u, i, tt, sup, sub, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
bookmap | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, booklibrary, mainbooktitle, booktitlealt, organizationname, b, u, i, tt, sup, sub, howtoavoid, screen, codeph, codeblock, pt, pd, fragref, synnote
machineryTask | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, abstract, bodydiv, section, sectiondiv, example, 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, howtoavoid, b, u, i, tt, sup, sub, screen
learningAssessment, learningOverview, learningSummary | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, abstract, bodydiv, section, sectiondiv, example, 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
learningBookmap | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, booklibrary, mainbooktitle, booktitlealt, organizationname, b, u, i, tt, sup, sub, howtoavoid
learningContent | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, abstract, bodydiv, section, sectiondiv, example, 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 | title, shortdesc, desc, p, note, lq, q, sli, li, itemgroup, dthd, ddhd, dt, dd, figgroup, pre, lines, ph, stentry, draft-comment, fn, cite, xref, entry, abstract, bodydiv, section, sectiondiv, example, 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/boolean

###### Example

    She said "<boolean state="yes"/>" when I asked her to marry me!

###### Attributes

Name | Description | Data Type | Default Value | Required?
state | The state of the boolean element. Allowable values are: yes no | (yes | no | -dita-use-​conref-​target) | #IMPLIED | Yes
univ-atts attribute group (includes select-atts, id-atts, and localization-atts groups) | A set of related attributes, described in 3.4.1.3 univ-atts attribute group |  |  |
global-atts attribute group (xtrf, xtrc) | A set of related attributes, described in 3.4.1.2 global-atts attribute group |  |  |
class, outputclass | Common attributes described in 3.4.1.9 Other common DITA attributes |  |  |

Previous Topic: 3.1.6 Specialization elements

Next Topic: 3.1.6.2 data

Parent Topic: 3.1.6 Specialization elements

Sibling Topics:

3.1.6.2 data

3.1.6.3 data-about

3.1.6.4 foreign

3.1.6.5 index-base

3.1.6.6 itemgroup

3.1.6.7 no-topic-nesting

3.1.6.8 state

3.1.6.9 unknown