CLTL's Loop Reference HyperSpec's Loop Reference Peter Karp's Loop Tutorial Iteration for each element in a list: > (loop for i in '(1 2 3) do (print i)) 1 2 3 Iteration for each cdr of a list: > (loop for i on '(1 2 3) do (print i)) (1 2 3) (2 3) (3) Iteration for each element in a vector: > (loop for i across #(1 2 3) do (print i)) 1 2 3 Iteration for each key of a hashtable: > (setf h (make-has