call:a call object: the original function call.
n:an "integer", the sample size used to estimate the graph.
max.ord:an integer, the maximum size of
the conditioning set used in the conditional independence tests of
the (first part of the algorithm), in function skeleton.
n.edgetests:the number of conditional independence
tests performed by the (first part of the) algorithm.
sepset:a list, the conditioning sets
that led to edge deletions. The set that led to the removal of
the edge i -- j is saved in either sepset[[i]][[j]] or
in sepset[[j]][[i]].
pMax:a numeric square matrix, where the
\((i,j)\)th entry contains the maximal p-value of all conditional
independence tests for edge \(i -- j\).