Each graph is a GRAPE record with a vew extra fields:

rec(
 h      := <list of values of h^2 for which the graph is a Fano graph>,
 real   := <list of values of h^2 for which the Fano graph can be real>,
 forms  := <transcendental lattices, when known and "simple">
 info   := <some information about the graph>
);

info.transitive has the following values:
 -1: no transitivity
  0: vertex transitive
t>0: t-arc transitive

The values in forms[].forms, unless rank equals 2, are usually
distinct "simple" representations of the same form

Sometimes, the same graph admits several embeddings to L, which
differ by the determinant of the transcendental lattice
