List of the query-node-ids
------------------------
0 1 2 3 4
------------------------

------------------------
Follows the data-node-ids of the subgraphs
matching the query-node-ids.
If empty, no matching has been found.
------------------------

Graph index: gn0
Subgraph matches: 5

gn0| 0:| 5 7 12 13 11
gn0| 1:| 8 7 5 4 6
gn0| 2:| 8 7 12 13 11
gn0| 3:| 10 11 12 13 7
gn0| 4:| 12 7 5 4 6

Graph index: gn1
Subgraph matches: 5

gn1| 0:| 0 1 7 8 6
gn1| 1:| 1 2 3 4 5
gn1| 2:| 2 1 7 8 6
gn1| 3:| 5 6 7 8 1
gn1| 4:| 6 5 3 4 2
 

Note that the list of the id gn_number and  the associated user graph labels are given in index.dat