subtype 

Provide any sub-classification for the element, additional to that given
by its type attribute.

Attribute Information

Used By

Element mei:name

Source 

<xs:attribute name="subtype" type="xs:NMTOKEN">
  <xs:annotation>
    <xs:documentation>Provide any sub-classification for the element, additional to that given by its type attribute.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample