语法看不懂，能帮忙解释一下吗？

etamina

下面的语句中ask patch和create-initial-turtles 后面接的[ ]中的语句是什么含义，其中非原语的都是定义的全局或者外部变量。语法有点奇怪，谁能帮我解释一下吗？多谢
to make-turtles
- y# _, l  d& j1 _! f0 V    ask patch 0 0 [
0 v' w4 _' \# r# i% a; t      create-initial-turtles num-random-min   "random-min"   violet
      create-initial-turtles num-random       "random"       brown
+ c, l) G- A2 P. V5 N      create-initial-turtles num-random-away  "random-away"  pink
8 U. X- D  U) R; J      create-initial-turtles num-open-min     "open-min"     blue
7 h3 \; D/ t3 L: s      create-initial-turtles num-open-min-max "open-min-max" orange ]
  set-common-variables
; T% \+ J7 Q1 t. q5 z# o! yend

to create-initial-turtles [n turtle-rule turtle-color]
( J1 Z2 o% B0 k+ X9 y  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
4 I9 r9 m4 @  d. g7 b4 W, c" m  [ sprout 1
3 c$ P; M& R1 x4 w8 o3 c    [ set rule turtle-rule
8 t3 f. F% G1 \5 o      set color turtle-color ] ]
end

[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]