<pricelist>
	<articledata>
	    <name> A </name>
	    <price> 10 </price>
	</articledata>
	<articledata>
	    <name> B </name>
	    <price> 20 </price>
	</articledata>
	<articledata>
	    <name> D </name>
	    <price> 200 </price>
	</articledata>
</pricelist>
%
<article>
  <name> A </name>
  <price> 10 </price>
  <features>
     <feature> A1 </feature>
     <feature> A2 </feature>
     <feature><subfeature> A21 </subfeature><subfeature> A22 </subfeature></feature>
     <feature> A3 </feature>
     <feature> A4 </feature>
  </features>
</article>
%
<article>
  <price> 200 </price>
  <name> D </name>
</article>
%
<article>
  <name> B </name>
  <price> 20 </price>
  <features>
     <feature> B1 </feature>
  </features>
</article>
%
<article>
  <name> C </name>
  <price> 30 </price>
  <features>
     NotAvailable
  </features>
</article>