The use case is anything that does not belong to you: a library book, a shared set of readers, a document that goes back into a file. Mark it up, work from it, then clear it. The mechanism is friction heat rather than abrasion, which also means a hot car or a laminator will clear a page you meant to keep. Colours are lighter than permanent highlighters by design. See erasable pens, highlighters and erasable gel pens.

Erasable Highlighters for Study and Office Use

Erasable highlighters for notes, study, planning and colour coding. Highlight and adjust work with ease.