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 [
6 z2 `- w. p8 L# w* p, `7 |      create-initial-turtles num-random-min   "random-min"   violet
3 p2 h: @- [9 b, Z' x" t. ?+ ?( ^5 b      create-initial-turtles num-random       "random"       brown
      create-initial-turtles num-random-away  "random-away"  pink
7 P1 j7 ^! N* ~, E. r# V      create-initial-turtles num-open-min     "open-min"     blue
      create-initial-turtles num-open-min-max "open-min-max" orange ]
( W* J. g4 G: v5 P  f  set-common-variables
end
. M" J# W' l' }8 _3 D9 w
to create-initial-turtles [n turtle-rule turtle-color]
: e" {, n8 B. @( E  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
  [ sprout 1
    [ set rule turtle-rule
      set color turtle-color ] ]
end

7 |: H7 D% Y+ k1 l" b, t! `[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]