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How do comments work?

I have questions about the answer at link http://stackoverflow.com/a/7029210 but I have not been able to figure any way to enter comments although other people seem to have no problem doing so. Can any provide any guidance on this?

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migrated from stackoverflow.com Jun 7 '12 at 16:23

This question came from our site for professional and enthusiast programmers.

marked as duplicate by Adam Lear Jun 7 '12 at 16:23

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
In your case you could possibly ask a new question and reference the link to the old answer, just as you've done here. – Mark Ransom Jun 7 '12 at 16:29

You need to have a reputation of at least 50 to comment on other people's questions.

See

http://stackoverflow.com/privileges/comment

http://stackoverflow.com/privileges

http://stackoverflow.com/faq

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