<?xml version="1.0"?>
<apo:purchaseOrder xmlns:apo="http://www.example.com/PO1"
                   orderDate="1999-10-20">
    <shipTo country="US">
        <name>Alice Smith</name>
        <street>123 Maple Street</street>
        <!-- etc. -->
    </shipTo>
    <billTo country="US">
        <name>Robert Smith</name>
        <street>8 Oak Avenue</street>
        <!-- etc. -->
    </billTo>
    <apo:comment>Hurry, my lawn is going wild!</apo:comment>
    <!-- etc. -->
</apo:purchaseOrder>

