The Pen

The pen is a writing instrument that uses ink to create marks on paper or other surfaces. Typically, it consists of a barrel containing ink, a nib or tip that transfers the ink onto the writing surface, and a mechanism (such as a cap, button, or refill system) to control ink flow. Modern pens include ballpoint, fountain, rollerball, and gel types, each utilizing different techniques to deliver ink smoothly for writing or drawing. Pens are essential tools for communication, documentation, and artistic expression, combining functionality with portability and ease of use.