Control code refers to a set of instructions used in programming to manage the behavior of a system or application. It helps dictate how software responds to various inputs, ensuring that tasks are executed correctly and efficiently. Control codes can be found in various programming languages and are essential for creating functional and interactive software. In the context of computer systems, control codes can also refer to specific characters that control the formatting and display of text. For example, ASCII control codes are used to manage tasks like moving the cursor or changing text color in terminal applications. These codes play a crucial role in user interface design and data communication.