variants 

The attribute variants defines the list of variants in which this ModifierClass is valid. When the attribute is absent the ModifierClass is valid in all variants.

Attribute Information

Used By

Attribute Group attlist.ModifierClass

Source 

<xs:attribute name="variants" type="xs:IDREFS">
  <xs:annotation>
    <xs:documentation xml:lang="en-US">The attribute variants defines the list of variants in which this ModifierClass is valid. When the attribute is absent the ModifierClass is valid in all variants.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample