<?xml version="1.0" encoding="utf-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
	    targetNamespace="http://www.wa5znu.org/2006/04/xdif/" 
	    xmlns:xdif="http://www.wa5znu.org/2006/04/xdif/"
	    elementFormDefault="qualified">
  
  <!-- Club numbers -->
  <xsd:element name="clubs">
    <xsd:complexType>
      <xsd:sequence minOccurs="0" maxOccurs="unbounded">
	<xsd:element ref="xdif:club" />
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>

  <!-- Club number -->
  <xsd:element name="club">
    <xsd:complexType>
      <xsd:simpleContent>
	<!-- What is the content of element club? -->
	<xsd:extension base="xsd:string">
	  <xsd:attribute name="name" type="xsd:string" use="optional"/>
	  <xsd:attribute name="number" type="xsd:string" use="optional"/>
	  <xsd:attribute name="webpage" type="xsd:anyURI" use="optional"/>
	</xsd:extension>
      </xsd:simpleContent>
    </xsd:complexType>
  </xsd:element>

  <!-- SIGs -->
  <xsd:complexType name="sig">
    <xsd:simpleContent>
      <xsd:extension base="xsd:string">
	<xsd:attribute name="webpage" type="xsd:anyURI" use="optional"/>
      </xsd:extension>
    </xsd:simpleContent>
  </xsd:complexType>

</xsd:schema>

