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
$ Q# a7 a5 C$ C6 k2 M- Kto make-turtles
    ask patch 0 0 [
      create-initial-turtles num-random-min   "random-min"   violet
      create-initial-turtles num-random       "random"       brown
9 R# u; c4 `7 n( a      create-initial-turtles num-random-away  "random-away"  pink
8 X+ ^) Y8 l7 {$ @- `- O      create-initial-turtles num-open-min     "open-min"     blue
      create-initial-turtles num-open-min-max "open-min-max" orange ]
: `% _' j( H% d' R$ z( D6 a  set-common-variables
end

  z  m. E" x5 c' H( \to create-initial-turtles [n turtle-rule turtle-color]
' i- x4 ?2 `4 z) |* ~6 N% u  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
/ V, H" }4 o9 A% h4 K) m  [ sprout 1
3 U+ `3 e: F7 W2 `- [1 m    [ set rule turtle-rule
      set color turtle-color ] ]
8 D' [5 \: f. s% M, I# C+ V7 s8 zend
" `! M, F% y, ^8 s8 h* `
& @5 p- V' p3 N[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]