If you create a new comment inside of a previous comment, C1 will display following the reviewer's initials.

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Quizplus · Accepted Answer

In most commenting systems, including code review and document editing platforms, creating a new comment inside of a previous comment (often called a nested comment or reply) does not typically result in the display of "C1" following the reviewer's initials. Instead, the system may show the reply indented or formatted differently to indicate it is a response to a previous comment, without altering the reviewer's initials or adding "C1".

If You Create a New Comment Inside of a Previous