1<element name="point" xmlns="http://relaxng.org/ns/structure/1.0" 2 datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes"> 3 <element name="x"> 4 <data type="double"/> 5 </element> 6 <element name="y"> 7 <data type="double"/> 8 </element> 9</element> 10