这是什么意思啊

(defun c:mjd ()
3 @2 n+ z$ H/ ~% I; d7 S  (prompt "请输入要求非标面积的层名:  ")
% j* c) d4 J5 [$ g% W, q  (setq aly (getstring))
& K2 A: F% Z, ?! v( g% G7 |  (command "layer" "s" "0" "f" "*" "t" aly "")
  (setq ena (ssget "x" '((8 . "025"))) n (sslength ena) i 0)
2 t9 p, p. x( r- H+ W  b5 O& ^  (setvar "clayer" "0")(setvar "cmdecho" 0)
1 M0 M' O. r& M  (while (setq ena (entsel "选择图形: "))
, Q5 S& D& A- V/ V    (setq en (car ena) ee (entget en) ee (entget en) )
  u6 q* r( \$ c: Y    (command "list" en "")
    (setq a (getvar "area") aa (/ a 1000000.0) aa (rtos aa 2 4))
" {8 e8 d1 I1 v3 Y/ x    (setq p1 (getpoint "/n文字位置:  "))
    (command "text" p1 "200" "0" aa)
)
8 a( Q; H9 ]6 g" i (setvar "cmdecho" 1)
! o; P" t. {/ r2 X7 y$ ])
. m& E0 H, k& y6 I) j9 o(defun c:mjw ()
  (prompt "请输入要求非标面积的层名:  ")
  (setq aly (getstring))
! d( |+ k' b9 R" z% e- [6 \  (command "layer" "s" "0" "f" "*" "t" aly "")
/ `! {  ^- |8 t. t6 N  (prompt "选择要标面积的图形: ")
  (while (setq ena (ssget ) )
5 f* p# u* Z; Y2 ]9 I  (if (/= ena nil)(setq n (sslength ena) i 0)(setq n 0))
2 U( @  h) x# X2 v. z( N  (repeat n
- e8 m) g4 V: ^) {0 k  (setvar "clayer" "0")(setvar "cmdecho" 0)
   (setq en (ssname ena i) ee (entget en) lla (cdr (assoc 8 ee)) i (1+ i))
$ `. a- N; I3 k- x! H- H: Y" [    (command "list" en "")
1 h' o. D4 N  ]$ D3 ^    (command "change" en """p" "la" "0" "")
- `; Z# x: [/ q* [+ i( L    (setq a (getvar "area") aa (/ a 1000000.0) aa (rtos aa 2 4))
3 L' G; p* j* x% e) S- @& ^, c$ X    (setq p1 (getpoint "/n文字位置:  "))
    (command "text" p1 "200" "0" aa)
% S  [/ ?) H7 c: k" V    (command "change" en """p" "la" lla "")
)
)
1 w8 ]) X0 Y& F1 O4 M (setvar "cmdecho" 1)
)