Hi,
well, it doesn't "reselect" the "next" node in a selected range, but it "points" to it, i.e. it stores the identifier number of the "next" node.
As regards what "next" means, remember that Ansys always sorts the nodes by identifier number, so in a range of, say, 500 selected nodes, where the lowest node-ID is, say, 2534, the "first" node in the range is this 2534; the "next" one is the node with the lowest ID-number greater than 2534, and so on.
Hope I haven't been too confused...
