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
2 K4 K: O8 _. yto make-turtles
, x8 _+ l" J) ^+ z9 D$ D    ask patch 0 0 [
! `2 @6 F* S- }, c0 O' I' Z      create-initial-turtles num-random-min   "random-min"   violet
      create-initial-turtles num-random       "random"       brown
, U# z) W* a, B5 Y! W  P      create-initial-turtles num-random-away  "random-away"  pink
      create-initial-turtles num-open-min     "open-min"     blue
7 \& O4 |# n: _+ I3 r3 z  ^2 Z      create-initial-turtles num-open-min-max "open-min-max" orange ]
2 f1 t0 S" W5 O* w" p  set-common-variables
end
; t( J) C; \) O, }0 V( ?
% q5 V5 Q7 x% \, \$ E& _to create-initial-turtles [n turtle-rule turtle-color]
  ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
  [ sprout 1
% M) U5 B2 H& q( D+ X    [ set rule turtle-rule
      set color turtle-color ] ]
) L" V1 c  w" }! o2 N, \' Kend
1 g' w2 t; Y: w! C$ o9 N3 e* @
, k* J3 A- X1 f) W' S$ n! n7 e[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ]