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
    ask patch 0 0 [
( [4 Z+ J4 H$ p      create-initial-turtles num-random-min   "random-min"   violet
      create-initial-turtles num-random       "random"       brown
      create-initial-turtles num-random-away  "random-away"  pink
      create-initial-turtles num-open-min     "open-min"     blue
      create-initial-turtles num-open-min-max "open-min-max" orange ]
. V2 a2 n2 f* n7 y5 X2 V  set-common-variables
end

to create-initial-turtles [n turtle-rule turtle-color]
  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
  [ sprout 1
4 D) a$ i) \0 ^0 x3 n) s    [ set rule turtle-rule
      set color turtle-color ] ]
end
1 K0 [# T4 M- N' o9 B% ^/ g& i
; f; y6 W- o; c. ?. q[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]