usebrowser.xml

也就是说

<?XML version = "1.0" ?>
<!DOCTYPE DOCUMENT [                            
<!ELEMENT DOCUMENT (CUSTOMER)*>                 
<!ELEMENT CUSTOMER (NAME,DATE,ORDERS)>          
<!ELEMENT NAME (LASTNAME,FIRSTNAME)>            
<!ELEMENT LASTNAME (#PCDATA)>                   
<!ELEMENT FIRSTNAME (#PCDATA)>                  
<!ELEMENT DATE (#PCDATA)>                       
<!ELEMENT ORDERS (ITEM)*>                       
<!ELEMENT ITEM (PRODUCT,NUMBER,PRICE)>          
<!ELEMENT PRODUCT (#PCDATA)>                    
<!ELEMENT NUMBER (#PCDATA)>                     
<!ELEMENT PRICE (#PCDATA)>                      
]>                                              
<DOCUMENT>
<CUSTOMER>                                      
    <NAME>                                      
        <LASTNAME>San</LASTNAME>
        <FIRSTNAME>Zhang</FIRSTNAME>
    </NAME>
    <DATE>September 11, 2002</DATE>
    <ORDERS>
        <ITEM>
            <PRODUCT>Book</PRODUCT>
            <NUMBER>5</NUMBER>
            <PRICE>$1.25</PRICE>
        </ITEM>
        <ITEM>
            <PRODUCT>dictionary</PRODUCT>
            <NUMBER>2</NUMBER>
            <PRICE>$.98</PRICE>
        </ITEM>
    </ORDERS>
</CUSTOMER>
<CUSTOMER>
    <NAME>
        <LASTNAME>Si</LASTNAME>
        <FIRSTNAME>Li</FIRSTNAME>
    </NAME>
    <DATE>May 22, 2002</DATE>
    <ORDERS>
        <ITEM>
            <PRODUCT>Book</PRODUCT>
            <NUMBER>12</NUMBER>
            <PRICE>$2.95</PRICE>
        </ITEM>
        <ITEM>
            <PRODUCT>dictionary</PRODUCT>
            <NUMBER>6</NUMBER>
            <PRICE>$1.50</PRICE>
        </ITEM>
    </ORDERS>
</CUSTOMER>
</DOCUMENT>