This is a Markdown thing, which is what Lemmy uses for its comments.
You can see what's supported in the Lemmy docs for Markdown.
Something I didn't notice in the docs is a trick that markdown allows:
Adding two spaces at the end of the line lets you make a new line instead of a new paragraph.
Dunno who came up with that, but it generally works wherever Markdown is accepted.
REUNION November 3, 2025
I solved it in 1️⃣5️⃣ moves!
⭐ ⭐ ⭐ 🦊 🦔 🎉