1  <?xml version="1.0"?>
 2  <grammar xmlns="http://relaxng.org/ns/structure/1.0"
 3  datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
 4    <start>
 5      <element name="test">
 6      <data type="token">
 7      <param name="pattern">[a-z]+</param>
 8      </data>
 9      </element>
10    </start>
11  </grammar>