example_document2.xml

<document order="">  
  some text
  <element_type1 nr=""/>
  <element_type2>
    <nested_element nested_element_attrib="">
       some more text<X/>
    </nested_element>
  </element_type2>
  <ns:element_typeNS xmlns:ns="http://ns.org" />
  <element_type1 nr="" />
  <element_type1 nr="" />
  <element_type1 nr="" />
  <element_type1 nr="" />
  <element_type3 brot=""/>
  <element_type3 kaese=""/>
  <!-- Milk is good for you! -->
  <?Milk /opt1 /opt2 /opt3 ?>
  <?Bread with cheese, or maybe not? ?>
  <element_type3 milch="" nr=""/>
</document>