I find I can still go leaf-to root, at least eith my editor (vim with the slimv plugin)- You can press ,W to 'wrap' a lisp expression in another set of parent

I find I can still go leaf-to root, at least eith my editor (vim with the slimv plugin)- You can press ,W to 'wrap' a lisp expression in another set of parentheses, which means for something like (a + b) * (c + d) You can write the '(+ a b)' first, then wrap it in a (* [...])