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
' o1 |+ u1 ^: s2 U2 T$ Y    ask patch 0 0 [
      create-initial-turtles num-random-min   "random-min"   violet
1 M4 e, V, i0 p% ?      create-initial-turtles num-random       "random"       brown
  U3 t  g' N( y  W4 G- \      create-initial-turtles num-random-away  "random-away"  pink
      create-initial-turtles num-open-min     "open-min"     blue
      create-initial-turtles num-open-min-max "open-min-max" orange ]
  set-common-variables
# ^1 x/ V  y8 t7 q; zend

to create-initial-turtles [n turtle-rule turtle-color]
' _& o' N: F/ R' Z  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
0 {0 Y' Z) z1 s* g- `  [ sprout 1
' B9 T! v" j5 R& L/ v# ~    [ set rule turtle-rule
      set color turtle-color ] ]
5 ~3 i9 s' \( |7 qend
# H, c$ E/ n  b+ Y' U
[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]