<?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>