심볼

(defparameter x 42) (symbol-value 'x) ; => 42 (symbol-name 'x) ; => "X" (symbol-package 'x) ; => #<PACKAGE "COMMON-LISP-USER">

(intern "AAAA") ; => AAAA (intern "aaa") ; => |aaa|

할당 assign (let* ) let flet labels

https://lispkorea.github.io/successful-lisp-kr/ch03/lesson_05.html