an object.

implementation-dependent.

The variables *, **, and *** are maintained by the Lisp read-eval-print loop to save the values of results that are printed each time through the loop.

The value of * is the most recent primary value that was printed, the value of ** is the previous value of *, and the value of *** is the previous value of **.

If several values are produced, * contains the first value only; * contains nil if zero values are produced.

The values of *, **, and *** are updated immediately prior to printing the return value of a top-level form by the Lisp read-eval-print loop. If the evaluation of such a form is aborted prior to its normal return, the values of *, **, and *** are not updated.

(values 'a1 'a2) → A1, A2 
'b → B 
(values 'c1 'c2 'c3) → C1, C2, C3 
(list * ** ***) → (C1 B A1) 

(defun cube-root (x) (expt x 1/3)) → CUBE-ROOT 
(compile *) → CUBE-ROOT 
(setq a (cube-root 27.0)) → 3.0 
(* * 9.0) → 27.0

Lisp read-eval-print loop.

- (variable), + (variable), / (variable), Section 25.1.1 (Top level loop)

*   ≡ (car /) 
**  ≡ (car //) 
*** ≡ (car ///)