Transforms a value into its literal form.
(show "a") ;; "'a'"
(show 44) ;; "44"Transforms a String into a List of the chars it contains.
(chars "Hello") ;; (Cons "H" (Cons "e" (Cons "l" (Cons "l" (Cons "o" Nil)))))Get the length of the string.
(strlen "Hello") ;; 5