<?xml version="1.0"?>
<far-north> Level-1
  <north-north-west1/>
  <north-north-west2/>
  <!-- Comment-2 --> Level-2
  <?a-pi pi-2?>
  <north>
	 <!-- Comment-3 --> Level-3
	 <?a-pi pi-3?>
     <near-north>
        <far-west/>
        <west/>
        <near-west/>
	    <!-- Comment-4 --> Level-4
	    <?a-pi pi-4?>
        <center center-attr-1="c1" center-attr-2="c2" center-attr-3="c3">
           <near-south-west/>
		   <!--Comment-5-->   Level-5
		   <?a-pi pi-5?>
           <near-south>
		      <!--Comment-6-->   Level-6
		      <?a-pi pi-6?>
		      <south attr1="First" attr2="Last">
                 <far-south/>
              </south>
           </near-south>
           <near-south-east/>
        </center>
        <near-east/>
        <east/>
        <far-east/>
     </near-north>
  </north>
  <north-north-east1/>
  <north-north-east2/>
</far-north>