1<?xml version="1.0" encoding="ISO-8859-1" ?> 2<!-- 3.2.3 : 2.1 3 One of ref or name must be present, but not both. 4--> 5<schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://foo" xmlns:foo="http://foo"> 6 7 <element name="bar" type="string"/> 8 9 <element name="foo"> 10 <complexType> 11 <sequence> 12 <element name="bar" ref="foo:bar"/> 13 </sequence> 14 </complexType> 15 </element> 16 17</schema> 18