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
$ O7 q6 C5 c6 U  J      create-initial-turtles num-random-away  "random-away"  pink
& o+ v: U% X1 v6 B8 L5 ]      create-initial-turtles num-open-min     "open-min"     blue
" b3 |' |9 [( B& g1 ?7 A/ N      create-initial-turtles num-open-min-max "open-min-max" orange ]
6 L0 R/ W3 [* C: Z. _  set-common-variables
end
; \9 D# k) m+ Y6 B
; L# ~6 E9 }2 j9 Q( yto create-initial-turtles [n turtle-rule turtle-color]
  U  g/ Y0 [* ?2 m$ V: c  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
  [ sprout 1
    [ set rule turtle-rule
5 e7 L4 f' N& w* o! t. [  k      set color turtle-color ] ]
end

9 I, Q1 |7 _  D5 H$ e[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]