/usr/lib/help/group is in scheme9 2013.11.26-1.
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1 2 3 4 5 6 7 8 9 10 11 12 | S9 LIB (group list integer) ==> list
Group the elements of LIST in tuples of INTEGER elements
each (except for the last tuple, which may contain fewer
elements). Return a list of the resulting tuples. The
elements appear in the output list in the same order as
in the input list.
INTEGER must be positive.
(group '(1 2 3 4 5) 2) ==> ((1 2) (3 4) (5))
(group '(1 2 3 4 5) 5) ==> ((1 2 3 4 5))
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