Proficiency proofreading application for Professor Yousry SellalLearn proofreading and become a professional in this field.The application includes 100 practical exercises on proofreading.Each exercise is a piece with 5 miscellaneous grammatical, spelling and grammatical errors.. and the user has to click on the five words.In every exercise, he has one incorrect click.. If you repeatedly click on a word that does not have any error, you will exit the competition.. and you can start over.Note that correcting errors is always accompanied by detailed explanation to achieve the full benefit of the user.And noting that the application saves your progress.. it starts every time you use the application from the last piece you stopped at previously.