1 <?xml version="1.0" encoding="UTF-8"?> 2 <grammar xmlns="http://relaxng.org/ns/structure/1.0"> 3 <start> 4 <ref name="e2"/> 5 </start> 6 <define name="e2"> 7 <element name="e2"> 8 <element name="e3"> 9 <text/> 10 </element> 11 </element> 12 </define> 13 </grammar> 14
