<!ELEMENT sales (summary, data)>

  <!ELEMENT summary (heading, subhead, description, author, date)>

  <!ELEMENT data (month*)>

  <!ELEMENT month (name, week*)>

  <?xml version="1.0"?>
  <?xml-stylesheet type="text/xsl" href="mydvd7.xsl"?>
  <!DOCTYPE sales SYSTEM "mydvd8.dtd">
    <sales>
      <summary>
        <heading>MyDVD Rental Store</heading>
        <subhead>Periodical Sales Report</subhead>
        <description>Sales Report for January, February, and &lt;&month;&gt; of 2001</description>
        <author>author: &preparedby;</author>
  	    <date>Jan 30, 2002</date>
      </summary>
      <data>
        <month>
          <name>January 2001</name>
          <week number="1" dvds_rented="12000" />
          <week number="2" dvds_rented="15000" />
          <week number="3" dvds_rented="18000" />
          <week number="4" dvds_rented="11800" />		  
        </month>
        <month>
          <name>February 2001</name>
          <week number="2" dvds_rented="12390" />
          <week number="3" dvds_rented="19050" />
          <week number="4" dvds_rented="11200" />		  
        </month>
        <month>
          <name>March 2001</name>
          <week number="1" dvds_rented="15300" />
          <week number="2" dvds_rented="12390" />
          <week number="3" dvds_rented="10050" />
          <week number="4" dvds_rented="11230" />		  
        </month>
      </data>
    </sales>

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