You can use Markdown in the comment body. Some most often used Markdown construction below.
Use empty line to split text into paragraphs.
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Use empty line

to split text into paragraphs.
You can also insert [hyperlinks](http://example.com).
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You can also insert hyperlinks.
> this is a citing > (html element blockquote is being used for rendering) this element. Beginning characted “>” is required in the first line of citation block.
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this is a citing (html element blockquote is being used for rendering) this element. Beginning characted “>” is required in the first line of citation block.