Custom key bindings allow users to assign specific functions or commands to particular keys on their keyboard. This feature is commonly found in software applications, video games, and operating systems, enabling users to tailor their experience to their preferences and improve efficiency. By creating custom key bindings, individuals can streamline their workflow, making frequently used actions more accessible. For example, in video games, players can set up key bindings for actions like jumping or shooting, enhancing their gameplay. Similarly, in productivity software, users can assign shortcuts for tasks like saving or formatting documents.