1<element name="addressBook" xmlns="http://relaxng.org/ns/structure/1.0">
2 <zeroOrMore>
3 <element name="card">
4 <interleave>
5 <element name="name">
6 <text/>
7 </element>
8 <element name="email">
9 <text/>
10 </element>
11 </interleave>
12 </element>
13 </zeroOrMore>
14</element>
15
16