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Current Mac keyboards include specialized function keys for controlling sound volume. The most recent Mac keyboards include 19 function keys, but keys F1–F4 and F7–F12 by default control features such as volume, media control, and Exposé. Former keyboards and Apple Keyboard with numeric keypad has the F1–F19 keys.
Shortcut keys and key combinations Most keyboards have a row of keys at the top that are labeled F1 through F12. These are like built-in hotkeys, each with an assigned function, like pressing F9 ...
⇧ Shift+F1: Ctrl+F1: Show context-sensitive help for currently focused window or control ⇧ Shift+F1: ⌘ Cmd+? (Not context-sensitive, functionally a "Spotlight" for menu bar items and help topics) ⇧ Shift+F1: ⇧ Shift+F1: Give focus to next/previous pane Ctrl+F6 / Alt+F5: ⌘ Cmd+` ⌘ Cmd+⇧ Shift+` F5 / Alt+F6: Give focus to splitter ...
The F1-F12 keys can be used for built-in Mac features or as standard function keys. The function keys may look slightly different depending on what model of Mac you have, but each key shows a self ...
Fn is a modifier key, and works like other modifiers keys, such as Ctrl, Shift, Alt and AltGr.For a standard modifier key, the microcontroller inside the keyboard sends a scancode for the modifier itself, which is then interpreted by the operating system and combined with other simultaneous key-presses.
The F-Lock key on a Microsoft keyboard. The F-Lock key, introduced by Microsoft in 2001, [1] toggles the state of the function keys. When on, keys F1 to F12 behave as applicable, with meanings defined by the application being used at the time. When off, new behaviour is used: F5 means "open", F10 means "spell" etc.
Some laptops and compact keyboards also have a Function Lock - FN Lock. On these devices, a Fn modifier key is used to combine keys to save room and add non-standard functionality; a common use is merging the row with keys F1- F12 with keys that adjust settings such as display brightness, media volume and playback, and keyboard illumination.
The function keys on all compact Magic Keyboards and MacBooks range from F1-F12 only, just like IBM PC keyboards. A Clear key, instead of a Num Lock key, on models with full numeric keypads , as these are dedicated to numeric input and not generally used for cursor control.