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
( _6 _6 H1 n" A0 Q: [1 jto make-turtles
    ask patch 0 0 [
, _% r) y& q# ?  i" r      create-initial-turtles num-random-min   "random-min"   violet
      create-initial-turtles num-random       "random"       brown
      create-initial-turtles num-random-away  "random-away"  pink
+ o+ T. {, f- C* i      create-initial-turtles num-open-min     "open-min"     blue
      create-initial-turtles num-open-min-max "open-min-max" orange ]
. |& y- t& P/ \1 `8 R, I0 P  set-common-variables
$ O2 R# e3 y1 ^5 t( R- dend

4 C# H5 N% ?' t& ~to create-initial-turtles [n turtle-rule turtle-color]
  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
: X9 K3 X$ o' h5 @  [ sprout 1
0 A) U% U+ m4 j& Q: A" b+ |    [ set rule turtle-rule
      set color turtle-color ] ]
end

+ ]* z5 y/ Y( r1 E[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]