exampleinvoice.xml

<?xml version="1.0" encoding="UTF-8"?>
<invoice xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:xlink="http://www.w3.org/1999/xlink"
    xmlns:fo="http://www.w3.org/1999/XSL/Format" xsi:noNamespaceSchemaLocation="../dtd/invoice.xsd"
    invoice_no="00/000" denomination="dollar">
    <meta>
        <xi:include href="snippets/company_info.xml"/>
        <xi:include href="client_info.xml"/>
    </meta>
    <servicesdelivered>
        <service>
            <description>10-day penetration test Sitting Duck</description>
            <fee vat="yes">7000</fee>
        </service>
        <service>
            <description>Something else</description>
            <fee vat="yes">2000</fee>
        </service>
    </servicesdelivered>
    <additionalcosts>
        <cost>
            <description>An additional cost without vat</description>
            <fee vat="no">1000</fee>
        </cost>
        <cost>
            <description>An additional cost with vat</description>
            <fee vat="yes">1000</fee>
        </cost>
    </additionalcosts>
</invoice>