I have answered to this question. However it's voted to delete by 2 users.

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There is no explanation why it's a sub standard answer. How do I suppose to update the answer to acceptable level?

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  • do you ask about first version or current one? There seem to be quite a bunch of edits made to this answer, especially in Rev 3 – gnat Jan 18 '17 at 5:53
  • I'm referring to the current one. As I remember the negative votes were not in there until I finished all 3 versions. I don't have a way to know when these close votes are made, but I guess they probably done at the same time when the negative votes made. – Low Flying Pelican Jan 18 '17 at 6:05
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    See my comment below your answer. – Doc Brown Jan 18 '17 at 7:35
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    Please note that delete votes can only be cast on an answer with a negative score (moderators can delete anything, however). Now that your answer has a non-negative score, the delete link (for 20k users) does not show up anymore. Meaning the odds are that your answer will not be deleted. – user22815 Jan 20 '17 at 15:41

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