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
& [! |& @5 B9 w. Ito make-turtles
    ask patch 0 0 [
! n' t: R& a) I' k4 x3 j7 j9 q      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
, D  t& Z; h% U% Z  L8 Y$ C3 q      create-initial-turtles num-open-min     "open-min"     blue
1 o9 Y2 e: G! `; C9 j, z      create-initial-turtles num-open-min-max "open-min-max" orange ]
  G) F( r: A# Z9 S6 a) z  set-common-variables
end
$ Y; d+ M( W3 M+ N" `. Z; g
# }! r2 u7 u6 l1 u4 _" Gto create-initial-turtles [n turtle-rule turtle-color]
% |( k9 K" {6 t: g" o" m: V  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
  [ sprout 1
* X* u+ P  v6 ^! B    [ set rule turtle-rule
      set color turtle-color ] ]
end

2 z( z  e+ \6 J* z" c5 I7 X: b[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]