FN Button / What Does This Button Do

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About

The FN Button on a keyboard is the function button, which allows users to use the function keys found at the top row of the keyboard. These buttons typically share space with numbers or appear on the digital TouchBar on laptop keyboards, but they also appear on desktop keyboards, serving miscellaneous functions that users can customize. What Does This Button Do refers to a series of TikTok in which people press the button and ask about its function. While the trend has inspired some sincere responses, primarily focusing on the dictation feature found on Apple Macintosh computers, other videos show the button starting the song "F.N." by Lil Tjay.