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 [
      create-initial-turtles num-random-min   "random-min"   violet
      create-initial-turtles num-random       "random"       brown
* |+ `9 z  ]0 J1 d% K5 z      create-initial-turtles num-random-away  "random-away"  pink
      create-initial-turtles num-open-min     "open-min"     blue
4 D& Y7 ^$ ?6 F      create-initial-turtles num-open-min-max "open-min-max" orange ]
  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])
6 D9 [! N, S0 U, {& d  [ sprout 1
. F# c) V6 }2 o. t0 U% ]    [ set rule turtle-rule
      set color turtle-color ] ]
5 n/ g# {. g. F; k- H: rend
& M% S2 ~2 v- h1 e5 W! ~& U
! j7 ^  i9 e: l: Y[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]