*Characteristics of mouth font notes 1. The only Korean alphabet-based insertion, deletion, and modification in Korea 2.Move the cursor by Korean alphabet unit, display the cursor by alphabet unit 3. Use of unique 1-byte combination character code and font for Hangul notation Instead of using 11,172 codes for the current Hangul notation, all Hangul is written with only 31 codes. 4. Use of new character font, Chinese font type notation function Hangul writing function 5. Ability to use the ne