How do comments work?
I just tried to add a comment to a question I had posed. I could not get the formatting right. To start a new line I thought I was supposed to end the line by pressing the space bar twice and then follow that by pressing the "return" key (using MacBook). That didn't work. Then I tried two spaces followed by shift-return. That appeared to work but it didn't. My comment (two or three paragraphs) was formatted as a single line of text.
Perhaps you set up a practice box somewhere, so those of us who have difficulty editing could keep trying until we get the formatting right.
PS I couldn't find a submit or post button for the comment (once written). Did I miss it?