1 Node 1 0 2 Node 2 0 3 Node 1.2 1 4 Node 1.1 1 5 Node 1.2.1]]> 3 6 Node 2.1 2 7 Node 1.2.2 3 8 Node 2.1.1 6 9 Node 2.1.2 6 10 Node 2.1.1.1 8 11 Node 2.1.1.1 8 12 Node 2.1.3 DataML http://dataml.net 6