category 

The optional attribute category can be used to define different levels of questions. How the content of this attribute is handled and what is allowed within is left to the author of the project specific XSLT files.

Attribute Information

Used By

Attribute Group elml:QuestionReq

Source 

<xs:attribute name="category" type="xs:string" use="optional">
  <xs:annotation>
    <xs:documentation>The optional attribute category can be used to define different levels of questions. How the content of this attribute is handled and what is allowed within is left to the author of the project specific XSLT files.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample