code: private boolean thereExistUnmarkedHItemsLighterThanTarget(final double threshold) {
      for (int i = 0; i < gadget_.getHRegionCount(); ++i) {
        if ((gadget_.getWeight(i) < threshold) && !gadget_.getMark(i)) {
          return true;
        }
      }
  
      return false;
    }
docs: this is a condition checked in detectAndHandleSubcaseOfPseudoExact()