sup 

<div xmlns="http://www.w3.org/1999/xhtml">
  <h3>Superscript</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
arrange restriction of xsd:NMTOKEN optional
id xsd:ID optional
specific-use xsd:string 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>

Used By

Element Group subsup.class

Source 

<xsd:element name="sup">
  <xsd:annotation>
    <xsd:documentation>
      <div xmlns="http://www.w3.org/1999/xhtml">
        <h3>Superscript</h3>
      </div>
    </xsd:documentation>
  </xsd:annotation>
  <xsd:complexType mixed="true">
    <xsd:choice minOccurs="0" maxOccurs="unbounded">
      <xsd:group ref="emphasized-text"/>
    </xsd:choice>
    <xsd:attribute name="arrange" use="optional">
      <xsd:simpleType>
        <xsd:annotation>
          <xsd:documentation/>
        </xsd:annotation>
        <xsd:restriction base="xsd:NMTOKEN">
          <xsd:enumeration value="stack"/>
          <xsd:enumeration value="stagger"/>
        </xsd:restriction>
      </xsd:simpleType>
    </xsd:attribute>
    <xsd:attribute name="id" use="optional" type="xsd:ID"/>
    <xsd:attribute name="specific-use" use="optional" type="xsd:string"/>
    <xsd:attribute ref="xml:base" use="optional"/>
  </xsd:complexType>
</xsd:element>

Sample