The timestamp field usually have a "@" prefix. Why? What is the difference if we do not add it ?

What is the difference between @timestamp and timestamp?

Kramer_Li (Kramer Li) April 6, 2016, 3:10am 5

Thanks very much. I posted another question here

Is it possible for you to have a look also? Thanks very much

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What is the difference between @timestamp and timestamp?

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