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    Please do not answer with just a link. Summarize the information directly in your answer. Keep the link for reference, but your answer should make sense even if the reader cannot or chooses not to follow the link. Commented Dec 27, 2011 at 23:41
  • I apologize for that, I didn't think I could write it as well as the author did, but I accepted Arcege's anyway. Commented Dec 28, 2011 at 1:46