Simplified Common Lisp reference
reverse
Symbol class: Sequences (Lists, Strings) and Arrays
Syntax:
Symbol type: function
reverseseq => a sequence
Argument description:
seq a sequence

REVERSE function makes new sequence with reverted order of elements. See also MAP, MAPCAR and MAPCAN.

(reverse '(1 2 3 4)) => (4 3 2 1)
(reverse '#(1 2 3 4)) => #(4 3 2 1)
(reverse "hola") => "aloh"
Function indexFull documentation for reverse (HyperSpec)