P5: Guidelines for Electronic Text Encoding and Interchange

<rng:element name="collection">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.naming.attributes"/>
 <rng:ref name="macro.xtext"/>
</rng:element>

element collection
{
   att.global.attributes,
   att.naming.attributes,
   macro.xtext
}