Related:

• ecursive acronym n. A hackish (and especially MIT) tradition is to choose acronyms/abbreviations that refer humorously to themselves or to other acronyms/abbreviations.
  The classic examples were two MIT editors called EINE ("EINE Is Not EMACS") and ZWEI ("ZWEI Was EINE Initially")....
• EMACS /ee'maks/ n. [from Editing MACroS] The ne plus ultra of hacker editors, a programmable text editor with an entire LISP system inside it.
  It was originally written by Richard Stallman in TECO under ITS at the MIT AI lab...
• GNU: /gnoo/, *not* /noo/ 1. [acronym: `GNU's Not UNIX!
  ', see {{recursive acronym}}] A UNIX-workalike development effort of the Free Software Foundation headed by Richard Stallman &l...
• YA-: [Yet Another] abbrev. In hackish acronyms this almost invariably expands to {Yet Another}, following the precedent set by UNIX `yacc(1)' (Yet Another Compiler-Compiler).
  See {YABA}. -- The AI Hackers Dictionary...
• GNU /gnoo/, not /noo/ 1. [acronym: `GNU's Not Unix!
  ', see recursive acronym] A Unix-workalike development effort of the Free Software Foundation headed by Richard Stallman &l...
• GNUMACS: /gnoo'maks/ [contraction of `GNU EMACS'] Often-heard abbreviated name for the {GNU} project's flagship tool, {EMACS}.
  Used esp. in contrast with {GOSMACS}. -- The AI Hackers Dictionary...
• Emacs -- the choice of a GNU generation.
• copyleft: /kop'ee-left/ [play on `copyright'] n. 1.
  The copyright notice (`General Public License') carried by {GNU} {EMACS} and other Free Software Foundation software, granting reuse and reproduction rights to all comers (but see also {General Public Virus})....
• X: /X/ n. 1. Used in various speech and writing contexts (also in lowercase) in roughly its algebraic sense of `unknown within a set defined by context' (compare {N}).
  Thus, the abbreviation 680x0 stands for 68000, 68010, 68020, 68030, or 68040, and 80x86 stands for 80186, 80286 80386 or 80486 (note that a UNIX hacker might write these as 680[0-4]0 and 80[1-4]86 or 680?...