What is the distance between paragraphs? For a typewritten letter:
space: (single, double, triple)

For a hand-printed letter: skip
line(s): (one, two, three)

The distance is double then one line, double for type written. One line for hand printed.

as for symbolic actions, the narrator's tearing down the wallpaper in an attempt to find the "woman" in the wallpaper represents her struggle to retain or regain her sanity.   the wallpaper has been part of her confinement and by her tearing it down, she is freeing herself from that confinement.