For example, diff tools visually compare two text documents to highlight any differences, such as typos, extra space or lines. The digital platform has cleaner solutions, though, which make text reviewing easier. Doing this on physical paper traditionally means crossing out mistakes, inserting suggestions and generally leaving notes on the side of the paper. Depending on the user's machine resources, they could experienceĪmong many attributes that come with a teacher's job (any teacher) is reviewing the work done by students.operation since it compares every pixel between the images.