P5: Guidelines for Electronic Text Encoding and Interchange

<rng:element name="imprint">
 <rng:ref name="att.global.attributes"/>
 <rng:oneOrMore>
  <rng:choice>
   <rng:group>
    <rng:ref name="model.imprintPart"/>
   </rng:group>
   <rng:group>
    <rng:ref name="model.dateLike"/>
   </rng:group>
  </rng:choice>
  <rng:zeroOrMore>
   <rng:ref name="model.global"/>
  </rng:zeroOrMore>
 </rng:oneOrMore>
</rng:element>

element imprint
{
   att.global.attributes,
   ( ( ( model.imprintPart ) | ( model.dateLike ) ), model.global* )+
}