High Quality Content by WIKIPEDIA articles! In computing, bucky bit in a binary representation of a character, is a bit that is set by pressing on a computer keyboard additional modifier key, other than ordinary shift key. Setting a bucky bit changes the output character. A bucky bit allows the user to type a wider variety of characters and commands while maintaining a reasonable number of keys on a keyboard. The keys corresponding to bucky bits on modern keyboards are the alt key, control key, meta key, command key (?), and option key. In ASCII, the bucky bit is usually the 8th bit (also known as meta bit). However, in older character representations wider than 8 bits, more high bits could be used as bucky bits. In modern X Window, bucky bits are bits 18-23 of an event code.

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