NIL: /nil/ No. Used in reply to a question, particularly one
asked using the `-P' convention. Most hackers assume this derives
simply from LISP terminology for `false' (see also T), but NIL as
a negative reply was well-established among radio hams decades
before the advent of LISP. The historical connection between early
hackerdom and the ham radio world was strong enough that this may
have been an influence.
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