label 

<div xmlns="http://www.w3.org/1999/xhtml">
  <h3>Label of a Figure, Reference, Etc.</h3>
</div>

Element Information

Model

email | ext-link | uri | inline-supplementary-material | related-article | related-object | hr | bold | fixed-case | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | serif | strike | underline | underline-start | underline-end | ruby | alternatives | inline-graphic | private-char | chem-struct | inline-formula | tex-math | m:math | abbrev | index-term | index-term-range-end | milestone-end | milestone-start | named-content | styled-content | fn | target | xref | sub | sup | x | break
Children: abbrev, alternatives, bold, break, chem-struct, email, ext-link, fixed-case, fn, hr, index-term, index-term-range-end, inline-formula, inline-graphic, inline-supplementary-material, italic, m:math, milestone-end, milestone-start, monospace, named-content, overline, overline-end, overline-start, private-char, related-article, related-object, roman, ruby, sans-serif, sc, serif, strike, styled-content, sub, sup, target, tex-math, underline, underline-end, underline-start, uri, x, xref

Attributes

QName Type Fixed Default Use Inheritable Annotation
alt xsd:string optional
id xsd:ID optional
xml:base xs:anyURI optional 
<div>
  <h3>base (as an attribute name)</h3>
  <p>denotes an attribute whose value provides a URI to be used as the base for interpreting any relative URIs in the scope of the element on which it appears; its value is inherited. This name is reserved by virtue of its definition in the XML Base specification.</p>
  <p>See
    <a href="http://www.w3.org/TR/xmlbase/">http://www.w3.org/TR/xmlbase/</a>for information about this attribute.</p>
</div>
xml:lang union of(xs:language, restriction of xs:string) optional 
<div>
  <h3>lang (as an attribute name)</h3>
  <p>denotes an attribute whose value is a language code for the natural language of the content of any element; its value is inherited. This name is reserved by virtue of its definition in the XML specification.</p>
</div>
<div>
  <h4>Notes</h4>
  <p>Attempting to install the relevant ISO 2- and 3-letter codes as the enumerated possible values is probably never going to be a realistic possibility.</p>
  <p>See BCP 47 at
    <a href="http://www.rfc-editor.org/rfc/bcp/bcp47.txt">http://www.rfc-editor.org/rfc/bcp/bcp47.txt</a>and the IANA language subtag registry at
    <a href="http://www.iana.org/assignments/language-subtag-registry">http://www.iana.org/assignments/language-subtag-registry</a>for further information.</p>
  <p>The union allows for the 'un-declaration' of xml:lang with the empty string.</p>
</div>

Used By

Element Groups answer-model, answer-set-model, app-group-model, array-model, author-comment-model, author-notes-model, back-model, book-title-group-model, boxed-text-model, chem-struct-wrap-model, def-item-model, def-list-model, disp-formula-group-model, disp-quote-model, explanation-model, fig-group-model, fig-model, fn-group-model, fn-model, glossary-model, index-title-group-model, kwd-group-model, label.class, list-item-model, list-model, note-model, option-model, question-model, question-preamble-model, question-wrap-group-model, ref-list-model, ref-model, sec-model, sec-opt-title-model, statement-model, table-wrap-foot-model, table-wrap-group-model, table-wrap-model, title-group-model, toc-entry-model, toc-title-group-model, trans-title-group-model, verse-group-model

Source 

<xsd:element name="label">
  <xsd:annotation>
    <xsd:documentation>
      <div xmlns="http://www.w3.org/1999/xhtml">
        <h3>Label of a Figure, Reference, Etc.</h3>
      </div>
    </xsd:documentation>
  </xsd:annotation>
  <xsd:complexType mixed="true">
    <xsd:choice minOccurs="0" maxOccurs="unbounded">
      <xsd:group ref="label-elements"/>
    </xsd:choice>
    <xsd:attribute name="alt" use="optional" type="xsd:string"/>
    <xsd:attribute name="id" use="optional" type="xsd:ID"/>
    <xsd:attribute ref="xml:base" use="optional"/>
    <xsd:attribute ref="xml:lang" use="optional"/>
  </xsd:complexType>
</xsd:element>

Sample