Inform on the increasing or decreasing progress of stationing values, for referents nested in a given alignment.
If present and true, or if not present, then the relevant subsequently nested referents are expected to have greater Pset_Stationing.Station values (i.e., increasing stations).
If present and false, then the relevant subsequently nested referents are expected to have lower Pset_Stationing.Station values (i.e., decreasing stations).
