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
# @1 r# W8 V: [. M& D; U: l" N    ask patch 0 0 [
- d6 Q& U/ V3 p7 r, j      create-initial-turtles num-random-min   "random-min"   violet
- P3 Q7 h8 {" Q# M      create-initial-turtles num-random       "random"       brown
      create-initial-turtles num-random-away  "random-away"  pink
1 K) n  Y' S4 p5 d      create-initial-turtles num-open-min     "open-min"     blue
      create-initial-turtles num-open-min-max "open-min-max" orange ]
  set-common-variables
; `' t# S( Q& r1 w0 j' D4 Nend
+ P- y$ x) l% V  g8 ~4 d+ I
7 T: W( K  H/ h/ V2 n- g' h/ H$ vto create-initial-turtles [n turtle-rule turtle-color]
  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
  [ sprout 1
0 |6 ^& S: s: J1 ^3 K3 x& E- ?    [ set rule turtle-rule
      set color turtle-color ] ]
$ i. G$ C" m6 W! z. G3 w3 S3 E# @end
2 x* g2 c$ Y: |- G# |% q
$ E9 w/ a& Y( O4 m3 ^[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]