A correction pen is a small stationery tool used to cover mistakes made while writing with ink. It contains a white fluid that dries quickly and allows you to write over the corrected area neatly. These are commonly used by students, teachers, and office workers to fix spelling errors, wrong words, or small writing mistakes in notebooks, documents, and forms. This usually has a fine metal tip or brush that helps apply the fluid precisely on the incorrect word. Once the liquid dries, it forms a smooth white surface, making the paper look clean and tidy. These are convenient, easy to carry, and very helpful for keeping written work neat and professional.