static void web_expandOperations(Web web) {
  for (Lisp rule : trueStatementsByHead("pqnfhkzxoqkaoyqk")) {
    S toExpand = rule.s(0);
    for (WebNode node : cloneList(web.nodes))
      for (Lisp lbl : node.labels)
        if (lbl.is(toExpand))
          for (Lisp child : lbl)
            web.node(child);
  }
}