【求助】 Comment 如何写？

在Elsevier投稿,有这么一段：
Entering a Comment is Required for Submission.

You must include below an ethical statement that the manuscript has not and will not be submitted for publication elsewhere, while it is in review for MRB.
Please suggest 3 suitable reviewers for your manuscript. Please provide the full name and e-mail address, and if possible, telephone number and postal address of each suggested reviewer.
Please enter any additional comments that you would like to send to the editorial office. These comments do not appear in your manuscript.

中间建议审稿人没什么，第一和第三条一般如何写好呢。