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
0 N2 s& M. w8 i+ ?to make-turtles
    ask patch 0 0 [
5 `! X1 W& {! x      create-initial-turtles num-random-min   "random-min"   violet
      create-initial-turtles num-random       "random"       brown
1 k6 L( j0 ]% R# F% v      create-initial-turtles num-random-away  "random-away"  pink
      create-initial-turtles num-open-min     "open-min"     blue
/ }, ?+ e5 K/ a      create-initial-turtles num-open-min-max "open-min-max" orange ]
  set-common-variables
end
3 D7 ^1 \. p5 w2 n
to create-initial-turtles [n turtle-rule turtle-color]
  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
* s6 L  n0 ~& \3 t0 R4 l  [ sprout 1
- `' g  S) Y  x: k    [ set rule turtle-rule
      set color turtle-color ] ]
end

* c+ p8 l) @; x5 I[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]