Which special keyboard modifier key, found on most laptops, allows manufacturers to reduce keyboard size by layering secondary functions (such as volume or brightness) onto existing keys, making smaller form-factor designs possible?
Touch screen
PS/2 port
Mechanical switch keycaps
Fn key
The Fn key (short for "function") is a modifier key that lets laptop makers assign alternate commands-volume, brightness, external-display toggle, and more-to keys that would otherwise have a single purpose. By eliminating the need for dedicated media or hardware-control keys, the Fn key enables a more compact keyboard layout and therefore thinner, lighter laptops.
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