All-color Excel text helpful for improving business skills. - Title: The World's Easiest-to-Understand Excel Text - Compatible Versions: 2021 / 2019 / 2016 / 365 - Author: Junko Toki - Features: All-color - Content: Excel text helpful for improving business skills Used for about six months. I don't think there are any markings, but it shows considerable signs of use. I haven't checked every detail. Please purchase only if you can accept scratches and stains. Also, please understand that we do not accept claims or returns after purchase. Thank you for looking.