Difference between SET, SETQ and SETF in LISP

SET can set the value of symbols;

SETQ can set the value of variables;

SETF is a macro that will call different function depending on what was called as its first argument.

examples

(set (quote l) '(1 2 3))
(1 2 3)

(set l '(1 2 3))
Failure, l must be a symbol.

(set 'l '(1 2 3))
(1 2 3)

(setq l '(1 2 3))
(1 2 3)

(setq (car l) 10)
Failure.

(setf l '(1 2 3))
(1 2 3)

(setf (car l) 10)

l is (10 2 3)