INIT_WRITE_NODE
INIT_WRITE_NODE(wudNodes + i, "Wd");
INIT_WRITE_NODE(wpNodes, "Wp");
INIT_WRITE_NODE(wqNodes, "Wq");
INIT_WRITE_NODE(wpNodes + 1, "Wp");
INIT_WRITE_NODE(wqNodes + 1, "Wq");