Death Star

from Jargon File (4.4.4, 14 Aug 2003)
Death Star
 n.

   [from the movie Star Wars]

   1. The AT&T corporate logo, which bears an uncanny resemblance to the
   Death Star in the Star Wars movies. This usage was particularly common
   among partisans of {BSD} Unix in the 1980s, who tended to regard the
   AT&T versions as inferior and AT&T as a bad guy. Copies still
   circulate of a poster printed by Mt. Xinu showing a starscape with a
   space fighter labeled 4.2 BSD streaking away from a broken AT&T logo
   wreathed in flames.

   2. AT&T's internal magazine, Focus, uses death star to describe an
   incorrectly done AT&T logo in which the inner circle in the top left
   is dark instead of light -- a frequent result of dark-on-light logo
   images.
    
from The Free On-line Dictionary of Computing (8 July 2008)
Death Star

   ["Star Wars" film] 1. The AT&T corporate logo, which appears
   on computers sold by AT&T and bears an uncanny resemblance to
   the Death Star in the movie.  This usage is particularly
   common among partisans of {BSD} Unix, who tend to regard the
   AT&T versions as inferior and AT&T as a bad guy.  Copies still
   circulate of a poster printed by Mt. Xinu showing a starscape
   with a space fighter labelled {4.2BSD} streaking away from a
   broken AT&T logo wreathed in flames.

   2. AT&T's internal magazine, "Focus", uses "death star" to
   describe an incorrectly done AT&T logo in which the inner
   circle in the top left is dark instead of light - a frequent
   result of dark-on-light logo images.
    

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