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
5 v4 B# |9 q# B    ask patch 0 0 [
      create-initial-turtles num-random-min   "random-min"   violet
& Z7 T" }/ I( w% o) K      create-initial-turtles num-random       "random"       brown
/ g, z9 r6 B# K% J      create-initial-turtles num-random-away  "random-away"  pink
. L. H8 e. U5 x9 W( L      create-initial-turtles num-open-min     "open-min"     blue
      create-initial-turtles num-open-min-max "open-min-max" orange ]
7 a. }- a1 d( N6 x8 `' d* \6 \  set-common-variables
4 U; \0 n& d4 N" f/ Z2 R2 i7 @; T2 S1 jend
# p0 l9 E: f0 n7 h! e
* Q' p$ o8 B1 Vto create-initial-turtles [n turtle-rule turtle-color]
  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
* u& H" J" E% _  p) H: O! n: ^* J  [ sprout 1
5 q4 p! l$ [# o$ J    [ set rule turtle-rule
# G! A* S# k  T5 I7 T      set color turtle-color ] ]
end
* H$ b) y; m# m, d# x& G
[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]