0 440Z0220-932§other information     <-- this is the first line of the "root file"
1 440Z0220-932§other information
1 623Z5400-1§other information
1 623Z5400-1§other information
1 623Z5400-18other information
1 623Z5400-18§other information
1 623Z5400-3§other information
1 623Z5420-1301§other information
1 623Z5420-1307§other information
1 7010902H01§other information
1 7010900H01other information
1 623Z5466-1013§other information
1 623Z5466-1015§other information
1 623Z5465-1039§other information
1 623Z5465-1041§other information
1 623Z5465-1001§other information
1 623Z5420-3301§other information
1 623Z5465-41§other information
1 623Z5462-1001§other information   <-- this is the line that has children of level 2
2 623Z5465-1§other information      <-- this is the second line of the 1_623Z5465-1001.CSV file
2 623Z5465-11§other information
2 CA623Z5465-1001§other information <-- and this is the last line of the 1_623Z5465-1001.CSV file
1 623Z5462-1003§other information   <-- here i continue to read the "root" file
2 623Z5468-1§Other information      <-- this is the second line of the 1_623Z5462-1003.CSV
2 623Z5468-9§Other information
2 623Z5468-7§Other information
2 623Z5468-5§Other information
2 CA623Z5462-1003§Other information
2 BACD40AC36B30§Other information
2 623Z5469-7§Other information
2 623Z5462-3§Other information      <-- and this is the last line of the 1_623Z5462-1003.CSV
1 7010902H01§other information      <-- continue to read the "root" file
1 623Z5420-3307§other information
1 B3-15838§other information
1 623Z5422-3307§other information