period 

supplies a pointer to some location defining a named period of time within
which the datable item is understood to have occurred.

Attribute Information

Used By

Attribute Group tei:att.datable.attribute.period

Source 

<xs:attribute name="period" type="xs:anyURI">
  <xs:annotation>
    <xs:documentation>supplies a pointer to some location defining a named period of time within which the datable item is understood to have occurred.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample