OneNote is a notebook application in Microsoft Office series products, and users can record their life and work at will. Can be used in various occasions, business people in the office, students and friends studying in the classroom, and even busy being a delicious housewife in the kitchen. Users can use OneNote to record their work plans, study notes, private recipes, etc., and view them synchronously between devices anytime and anywhere. In addition, Microsoft has previously launched the Office Online online office service, which also has built-in OneNote Online as the online version of OneNote.