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yap-6.3/Logtalk/examples/roots/nil.lgt
2001-06-06 19:40:57 +00:00

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:- object(nil,
instantiates(object)).
:- info([
version is 1.0,
date is 2000/7/24,
authors is 'Paulo Moura',
comment is 'Used to represent a void reference.']).
nil.
:- end_object.