window%EC%97%90%EC%84%9C %ED%99%98%EA%B2%BD%EC%83%81%ED%83%9C%EB%8A%94 %EA%BC%AD nfrc%EC%9D%B4%EC%96%B4%EC%95%BC %ED%95%98%EB%82%98%EC%9A%94%3F