seq 

Used to assign a sequence number related to the order in which the encoded
features carrying this attribute are believed to have occurred.

Attribute Information

Used By

Attribute Group mei:mei_att.sequence.attribute.seq

Source 

<xs:attribute name="seq" type="xs:positiveInteger">
  <xs:annotation>
    <xs:documentation>Used to assign a sequence number related to the order in which the encoded features carrying this attribute are believed to have occurred.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample