static bool ctxDoNextActionInRule(WoodyRule rule) {
  L<CtxCase> actions = ctxCases(rule.body);
  if (nempty(actions)) {
    bool random = eq(rule.properties.get("ACTIONSELECTOR"), "RANDOMLOOP"); // otherwise assume TILLEND
    S name = rule.longName();
    BitSet bs = conversation->randomLoopMap.get(name);
    if (bs == null) {
      conversation->randomLoopMap.put(name, bs = new BitSet);
      conversation->change();
    }
    new L<Int> candidates;
    for i over actions: if (!bs.get(i)) candidates.add(i);
    if (empty(candidates)) {
      bs.clear();
      conversation->change();
      for i over actions: candidates.add(i);
    }
    int idx = random ? random(candidates) : first(candidates);
    bs.set(idx);
    conversation->change();
    CtxCase action = actions.get(idx);
    ctxProcessAction(action.body);
    S a = mapGet(action.properties, "ANALYZER");
    if (a != null) ctxContext().activeAnalyzer = a;
    ctxContext().nextRule = rule.properties.get("GOTO");
    true;
  }
  false;
}