/n_setn                       Set ranges of a node's control value(s)

int - node ID
[
  int|string - a control index or name
  int        - number of sequential controls to change (M)
  [
    float    - a control value
  ] * M
] * N

Set contiguous ranges of control indices to sets of values. For each
range, the starting control index is given followed by the number of
controls to change, followed by the values. If the node is a group,
then it sets the controls of every node in the group.