1<grammar xmlns="http://relaxng.org/ns/structure/1.0">
2
3  <include href="inline3.rng"/>
4
5  <start>
6    <element name="doc">
7      <zeroOrMore>
8	<element name="p">
9	  <ref name="inline"/>
10	</element>
11      </zeroOrMore>
12    </element>
13  </start>
14
15  <define name="inline.extra" combine="choice">
16    <choice>
17      <element name="code">
18	<ref name="inline"/>
19      </element>
20      <element name="em">
21	<ref name="inline"/>
22      </element>
23    </choice>
24  </define>
25  
26</grammar>
27