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
" B1 u! g6 N; X; B4 c6 L    ask patch 0 0 [
      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
      create-initial-turtles num-open-min     "open-min"     blue
8 D3 f4 m0 E/ m8 q      create-initial-turtles num-open-min-max "open-min-max" orange ]
  set-common-variables
end
, ~9 m7 T  A" F2 b! y! L. R* D
: O' h7 r$ n; k9 \& [, f; j2 Kto create-initial-turtles [n turtle-rule turtle-color]
  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
; q, }# G. H% j) T6 |- B4 y: d  [ sprout 1
  J; f' W/ K$ }$ r/ |' v    [ set rule turtle-rule
2 c& V$ t' S- m- v6 B: p( r      set color turtle-color ] ]
5 n. p7 b- w7 }6 J1 {. x8 cend
5 J0 c: k8 L+ p' U
[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]