Related:

• hexit /hek'sit/ n. A hexadecimal digit (0-9, and A-F or a-f).
  Used by people who claim that there are only ten digits, dammi...
• quadruple bucky: n., obs. 1. On an MIT {space-cadet keyboard}, use of all four of the shifting keys (control, meta, hyper, and super) while typing a character key.
  2. On a Stanford or MIT keyboard in {raw mode}, use of four shift keys while typing a fifth character, where the four shift keys are the control and meta keys on *both* sides of the keyboard....
• cokebottle: /kohk'bot-l/ n. Any very unusual character, particularly one you can't type because it it isn't on your keyboard.
  MIT people used to complain about the `control-meta-cokebottle' commands at SAIL, and SAIL people complained right back about the `{altmode}-altmode-cokebottle' commands at MIT....
• EOF: /E-O-F/ [abbreviation, `End Of File'] n. 1. [techspeak] The {out-of-band} value returned by C's sequential character-input functions (and their equivalents in other environments) when end of file has been reached.
  This value is -1 under C libraries postdating V6 UNIX, but was originally 0....
• meta bit: n. The top bit of an 8-bit character, which is on in character values 128--255.
  Also called {high bit}, {alt bit}, or {hobbit}....
• pace-cadet keyboard n. A now-legendary device used on MIT LISP machines, which inspired several still-current jargon terms and influenced the design of EMACS.
  It was equipped with no fewer than seven shift key...
• fred: n. 1. The personal name most frequently used as a {metasyntactic variable} (see {foo}).
  Allegedly popular because it's easy for a non-touch-typist to type on a standard QWERTY keyboard....
• its on a keyboard: n. Small bumps on certain keycaps to keep touch-typists registered (usually on the `5' of a numeric keypad, and on the `F' and `J' of a {QWERTY} keyboard
  but the Mac, perverse as usual, has them on the `D' and `K' keys)....
• pastie: /pay'stee/ n. An adhesive-backed label designed to be attached to a key on a keyboard to indicate some non-standard character which can be accessed through that key.
  Pasties are likely to be used in APL environments, where almost every key is associated with a special character....