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
, `* q8 v; @7 e# c7 I6 D! U* P4 Pto make-turtles
    ask patch 0 0 [
9 K; B% W- T# z" h8 @7 D7 l. ^# k      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 ]
  set-common-variables
+ F. N; o, c. Oend
& J# m( [& x1 y( ^2 k3 H
. v0 v5 f) h$ y9 v8 ito create-initial-turtles [n turtle-rule turtle-color]
3 W9 L! S4 g. {: r1 ~! p# m  `  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
  [ sprout 1
    [ set rule turtle-rule
+ J8 C$ G$ }( h! N7 e" A5 K      set color turtle-color ] ]
end
" O; P0 s7 D! C$ W( M
5 K* d: x* X* Z7 Y[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]