<?xml version="1.0"?>

<!--
$Id$
    Copyright (c) 2003-2005, Research Systems, Inc.  All rights reserved.
    Unauthorized reproduction prohibited.
-->

<!--
    xmlns is the default XMLSchema namespace.
    targetNamespace is the namespace whose elements we are defining.
    elementFormDefault="qualified" directs that any documents conforming
        to this schema must be namespace qualified.
-->
<schema xmlns="http://www.w3.org/2001/XMLSchema"
    targetNamespace="http://www.rsinc.com"
    elementFormDefault="qualified">

  <element name="Help">
    <complexType>
      <sequence>

        <element name="Topic" minOccurs="0" maxOccurs="unbounded">
          <complexType>
            <sequence>

              <element name="Keyword" type="string" minOccurs="1" maxOccurs="unbounded" />

              <element name="Link" minOccurs="0" maxOccurs="unbounded">
                <complexType>
                  <simpleContent>
                    <extension base="string">
                      <attribute name="type" type="string" use="required" />
                      <attribute name="book" type="string" />
                    </extension>
                  </simpleContent>
                </complexType>
              </element>

            </sequence>
          </complexType>
        </element>

      </sequence>
    </complexType>
  </element>

</schema>

