- Purpose:
+ Practice writing beautiful letters for students and learners of Vietnamese
+ Users create their own exercises by typing in letters or phrases

- Target users:
+ Teacher
+ Parents' students
+ Foreigners want to practice words and Vietnamese

- Functions of the application:
+ Enter sample paragraphs (including title, content, author's name)
+ Enter the sample poem
+ Create advanced writing exercises yourself
+ Support for creating basic brushstrokes (crocheted lines, curved lines, alternated strokes and tight strokes)

- Using:
+ After creating a PDF file, users can print directly on the phone via wifi printer or share the file on other devices to print