A highlighter is a special type of pen that uses bright, translucent ink to emphasize important text. People often use highlighters when studying or reading to make key information stand out. The vibrant colors, like yellow, pink, and green, help readers quickly locate important points in books, notes, or documents. Highlighters are commonly used by students, teachers, and professionals. They can be found in schools, offices, and homes. Many people also use highlighters alongside other tools, such as sticky notes or notebooks, to organize their thoughts and improve their learning experience.