1<?xml version="1.0"?> 2<doc> 3 <sub pos="1"> 4 <child>child number 1</child> 5 <sub-sub pos="1sub"> 6 <child>grandchild number 1</child> 7 </sub-sub> 8 </sub> 9 <sub0 pos="2-no"> 10 <child>child number 2</child> 11 <sub pos="2.5"> 12 <child>grandchild number 2</child> 13 </sub> 14 </sub0> 15 <sub pos="3"> 16 <child>child number 3</child> 17 <subno pos="3.5-no"> 18 <child>grandchild number 3</child> 19 </subno> 20 </sub> 21 <sub0 pos="4-no"> 22 <child>child number 4</child> 23 <sub-sub pos="4sub"> 24 <child>grandchild number 4</child> 25 </sub-sub> 26 </sub0> 27</doc>