Can thread posts contain paragraphs? How can I insert a newline without "Send"ing what I've typed thus far?
you can't
Is there any specific reason why not? On my gemini server it was because of a bug in the server code. I also know not all clients support newlines in text input.
hm maybe it is possible then? but i haven't seen any clients that support newlines in text input
I guess that depends on the client you use.