The class attribute describes the type of list.
Anonymous
      <listType
	class="string"
/>
    
      <attribute name="class" use="required" >
  <simpleType>
    <restriction base="string">
      <enumeration value="bullet" />
      <enumeration value="nobullet" />
      <enumeration value="ordered" />
    </restriction>
  </simpleType>
</attribute>