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
4 a8 m% p7 S9 F  {. @, mto make-turtles
) W$ _& W; m* U) D3 H    ask patch 0 0 [
      create-initial-turtles num-random-min   "random-min"   violet
) b. L6 K/ a( G; A      create-initial-turtles num-random       "random"       brown
1 q4 x7 ~) k( R: T      create-initial-turtles num-random-away  "random-away"  pink
2 H7 _9 P9 a" W      create-initial-turtles num-open-min     "open-min"     blue
) N, }, n4 s) ^% Q5 E      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])
  [ sprout 1
    [ set rule turtle-rule
6 N( O  n3 A5 r  i- _( _      set color turtle-color ] ]
end
$ w4 `9 M' C+ x! {3 S
3 y0 \- S. {9 v0 g( \[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]