🔶 What is a Highlighter? A highlighter is a type of writing tool (usually a marker pen) that applies translucent, fluorescent ink over text to make it stand out without obscuring it. It is often used to emphasize or bring attention to important text. 🕰️ History of Highlighters 1963 – The first highlighter pen was developed by Dr. Frank Honn and introduced by Carter's Ink Company , later bought by Avery Dennison . The original highlighter was called the "Hi-Liter" and used yellow ink (which is still the most popular color). Over the years, different colors, tip shapes, and ink types were introduced. ✏️ Uses of Highlighters Studying and Note-taking – To mark key points in books, handouts, or notes. Editing – Editors and proofreaders use them to highlight parts that need correction or revision. Organizing – Color-coded highlighting helps categorize information (e.g., definitions, dates, formulas). Office Work – Used to mark pendi...