P5: Guidelines for Electronic Text Encoding and Interchange

<rng:element name="number">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.lexicographic.attributes"/>
 <rng:ref name="macro.paraContent"/>
</rng:element>

element number
{
   att.global.attributes,
   att.lexicographic.attributes,
   macro.paraContent
}