sample

<xs:attribute name="sample" default="complete">
  <xs:annotation>
    <xs:documentation>indicates whether this division is a sample of the original source and if so, from which part.</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:token">
      <xs:enumeration value="initial">
        <xs:annotation>
          <xs:documentation>division lacks material present at end in source.</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="medial">
        <xs:annotation>
          <xs:documentation>division lacks material at start and end.</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="final">
        <xs:annotation>
          <xs:documentation>division lacks material at start.</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="unknown">
        <xs:annotation>
          <xs:documentation>position of sampled material within original unknown.</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="complete">
        <xs:annotation>
          <xs:documentation>division is not a sample.</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>