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

Use empty line

to split text into paragraphs.

You can also insert [hyperlinks](http://example.com).

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.

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.