① Recorded past questions from the 1st course of certified realtors for 17 years from 2006 to 2022 and detailed commentary (reflecting revisions in 2023)
② Subject: Civil Law, Introduction to Real Estate Studies
③ Main functions: Solve in order of contents, solve in sequential order, solve randomly, solve only wrong questions, solve only checked questions, score statistics, font size setting, window size adjustment, colored pencil function, memo function, timer function, etc.