1  <grammar xmlns="http://relaxng.org/ns/structure/1.0">
 2  
 3    <start>
 4      <ref name="anyElement"/>
 5    </start>
 6  
 7    <define name="anyElement">
 8      <element>
 9        <anyName/>
10        <zeroOrMore>
11  	<choice>
12  	  <attribute>
13  	    <anyName/>
14  	  </attribute>
15  	  <text/>
16  	  <ref name="anyElement"/>
17  	</choice>
18        </zeroOrMore>
19      </element>
20    </define>
21  
22  </grammar>