[Forums] Newline, carriage return into Text input (eg Text_Note style) field

I don't seem to be able to find a way to enter a newline/return into a Text input field - eg one that has the Text_Note style applied to it and hence can be large, user-expanded, and expectant of paragraphs of text.

Have tried multiple browser types and can't see much in the way of configuration options or forum posts on this.