1 [ Tree (Cell 1:1 2:6 (NodeHeader (HeaderSection 1)))
2 [ Tree (Cell 1:3 1:7 NodePara)
3 [ Tree (Cell 1:3 1:7 (NodeToken (TokenText "sec1"))) []
5 , Tree (Cell 2:1 2:6 NodePara)
6 [ Tree (Cell 2:1 2:6 (NodeToken (TokenText "text1"))) []
9 , Tree (Cell 3:1 4:6 (NodeHeader (HeaderSection 1)))
10 [ Tree (Cell 3:3 3:8 NodePara)
11 [ Tree (Cell 3:3 3:8 (NodeToken (TokenText "sec11"))) []
13 , Tree (Cell 4:1 4:6 NodePara)
14 [ Tree (Cell 4:1 4:6 (NodeToken (TokenText "text2"))) []
17 , Tree (Cell 5:1 5:7 (NodeHeader (HeaderSection 1)))
18 [ Tree (Cell 5:3 5:7 NodePara)
19 [ Tree (Cell 5:3 5:7 (NodeToken (TokenText "sec2"))) []