square brackets indicate an array:
x=["test","west","best"]
?x[1]
>west
Curly brackets indicate an RoAssociativeArray:
x={dog:"animal",zucchini:"vegtable",quartz:"mineral"}
?x.zucchini
>vegtable
I could be wrong, but I think the code you posted has some extra brackets that are from an attempt to colorize the code when you posted it, this makes the code almost unreadable, don't try to colorize code you post on the forum, just copy, paste, highlight and click "code" button before posting.
- Joel
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