The term "underline" refers to a typographical feature where a line is drawn beneath text to emphasize or highlight it. This technique is commonly used in writing and printing to draw attention to specific words or phrases, making them stand out for readers. Underlining can also indicate titles of works, such as books or articles, in certain style guides. In digital contexts, underlining is often applied using word processing software or HTML coding. In HTML, the <u> tag is used to create underlined text. However, in modern web design, underlining is less common for links, as it can be confused with traditional hyperlink formatting.