The correction pen, also known as the "correction fluid," is a convenient tool for fixing mistakes in writing or drawing. It is a small cylindrical device filled with white correction liquid. When applied to paper, it dries quickly, forming an opaque layer that completely covers errors like incorrect letters, numbers, or lines. Once dry, the surface becomes smooth and ready for rewriting text or drawing over it. The correction pen is easy to use, economical, and helps maintain the neatness of documents and educational materials