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(: Test: K-SeqZeroOrOneFunc-1                            :)
(: Written by: Frans Englich                             :)
(: Date: 2006-10-05T18:29:40+02:00                       :)
(: Purpose: A test whose essence is: `zero-or-one(1, 2)`. :)
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zero-or-one(1, 2)