# FUNCTION_KEYS

```ts
const FUNCTION_KEYS: Set<FunctionKey>;
```

Defined in: [constants.ts:160](https://github.com/TanStack/hotkeys/blob/main/packages/hotkeys/src/constants.ts#L160)

Set of all valid function keys (F1-F24).

Function keys are commonly used for system shortcuts (e.g., F12 for DevTools,
Alt+F4 to close windows) and application-specific commands.