F10 is a key function key found on most computer keyboards, typically located at the top row. It is often used in various software applications to perform specific tasks, such as opening the file menu in many programs. In some cases, pressing F10 can also activate the menu bar in applications, allowing users to navigate through options more easily. In the context of programming, F10 is commonly associated with debugging. In integrated development environments (IDEs) like Visual Studio or Eclipse, pressing F10 allows developers to step over a line of code during execution, helping them analyze the program's behavior without diving into function calls.