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
; e# ?5 ?% E8 e) l/ |( n1 v" Lto make-turtles
# H: f9 n% C- Y6 q4 i  |) s7 G    ask patch 0 0 [
      create-initial-turtles num-random-min   "random-min"   violet
  N% z( b+ E2 z+ o- o      create-initial-turtles num-random       "random"       brown
+ W3 \  d$ k  @  c3 {& |, _: ?; c      create-initial-turtles num-random-away  "random-away"  pink
      create-initial-turtles num-open-min     "open-min"     blue
      create-initial-turtles num-open-min-max "open-min-max" orange ]
5 n/ V! Y& X2 D1 U( x6 W9 E3 b7 a  set-common-variables
' T6 M: i) [5 ]' dend

3 C- M% F" ~6 N, s, H+ Ito create-initial-turtles [n turtle-rule turtle-color]
# C6 i: w* a/ P# {& S; B9 C  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
  [ sprout 1
    [ set rule turtle-rule
# s/ T  u1 x' P. |5 }" B      set color turtle-color ] ]
end
# p9 @& l, S+ o
[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]