http://www.w3.org/1999/xhtml
element optgroup

Documentation

      option group
      

Model

<optgroup
  class = xs:NMTOKENS
  dir = <TODO local simpleType in attribute>
  disabled = <TODO local simpleType in attribute>
  id = xs:ID
  label = Text
  lang = LanguageCode
  lang = xs:language
  onclick = Script
  ondblclick = Script
  onkeydown = Script
  onkeypress = Script
  onkeyup = Script
  onmousedown = Script
  onmousemove = Script
  onmouseout = Script
  onmouseover = Script
  onmouseup = Script
  style = StyleSheet
  title = Text>
option+
</optgroup>

class

dir

disabled

id

label

lang

lang

In due course, we should install the relevant ISO 2- and 3-letter codes as the enumerated possible values . . .

onclick

ondblclick

onkeydown

onkeypress

onkeyup

onmousedown

onmousemove

onmouseout

onmouseover

onmouseup

style

title

Source

<xs:element name="optgroup">
  <xs:complexType>
    <xs:sequence>
      <xs:element maxOccurs="unbounded" ref="option"/>
    </xs:sequence>
    <xs:attributeGroup ref="attrs"/>
    <xs:attribute name="disabled">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="disabled"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="label" type="Text" use="required"/>
  </xs:complexType>
</xs:element>