Scroll Lock is a key found on many computer keyboards, often labeled as "ScrLk." Its primary function is to modify the behavior of the arrow keys. When activated, the arrow keys scroll the contents of a window instead of moving the cursor, which can be useful in certain applications. Although it was more commonly used in older software, such as Microsoft Excel, its relevance has diminished in modern computing. Most users rarely encounter the Scroll Lock feature today, as many applications do not utilize it, and some keyboards no longer include the key at all.