<xsd:group name="amendmentBlock">
  <xsd:annotation>
    <xsd:documentation>
      <type>Group</type>
      <name>amendmentBlock</name>
      <comment>The group amendmentBlock lists the structures that should be found in an amendment</comment>
    </xsd:documentation>
  </xsd:annotation>
  <xsd:choice>
    <xsd:element ref="amendmentHeading"/>
    <xsd:element ref="amendmentContent"/>
    <xsd:element ref="amendmentReference"/>
    <xsd:element ref="amendmentJustification"/>
  </xsd:choice>
</xsd:group>