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
    ask patch 0 0 [
. ]0 P  M# b7 O      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
2 v3 J7 }; ~7 q+ W- E  E      create-initial-turtles num-open-min     "open-min"     blue
- x' Q9 K6 d8 M& t- D- P9 \      create-initial-turtles num-open-min-max "open-min-max" orange ]
  set-common-variables
/ M4 c. C/ ]9 K: G; cend
: T2 e' Z1 z4 p" ^! Q
to create-initial-turtles [n turtle-rule turtle-color]
3 R) \! L9 q& p& c9 a* h  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
' N' t8 r5 S3 F% n5 _& s  [ sprout 1
    [ set rule turtle-rule
      set color turtle-color ] ]
end
, X- x2 q( g7 V
( w/ w- Q; ?' A; t[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]