<match value="[acdnosx]z" type="regex" offset="5"/>
          <!-- holdings -->
          <match value="[cdn][uvxy]" type="regex" offset="5"/>
          <!-- classification -->
          <match value="[acdn]w" type="regex" offset="5"/>
          <!-- community -->
          <match value="[cdn]q" type="regex" offset="5"/>
        </match>
      </match>
    </magic>
  </mime-type>