Hello, Mr. Park Sung-hoo. Thank you for listening to the function dictionary lecture. If you have any questions about functions, please ask me anytime. I will do my best to help you. And please send me a review to dmsgml-1030@hanmail.net with the message, "I wrote a review." Then, as promised in the news, I will send you the e-book PDF of [85 Excel functions that are easy to use like a dictionary]. Thank you.