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
3 c6 |. y; P- ?, ]; N    ask patch 0 0 [
      create-initial-turtles num-random-min   "random-min"   violet
      create-initial-turtles num-random       "random"       brown
4 [. z* ]' ?* y1 p' q      create-initial-turtles num-random-away  "random-away"  pink
0 P+ ?+ l% ~% w$ U) v# X      create-initial-turtles num-open-min     "open-min"     blue
      create-initial-turtles num-open-min-max "open-min-max" orange ]
9 M8 _( N! u( R  set-common-variables
end

) D- h0 i# |# i  Y, ?' W! ~& r6 Qto create-initial-turtles [n turtle-rule turtle-color]
  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
  [ sprout 1
& a, h; d1 H9 x# k# q/ W8 ?+ p    [ set rule turtle-rule
      set color turtle-color ] ]
# v7 u- N# B% ?, F; G% |8 send
: @& v6 N5 U: e. Q
3 n8 v; b) @0 n[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]