<mime-type type="multipart/signed"/>
  <mime-type type="multipart/voice-message"/>

  <mime-type type="application/dif+xml">
    <root-XML localName="DIF"/>
    <root-XML localName="DIF" namespaceURI="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/"/>
    <glob pattern="*.dif"/>
    <sub-class-of type="application/xml"/>
  </mime-type>

  <mime-type type="application/onix-message+xml">