MB4 196b: Private Domain on Shabbos (345:4-7)

Status of holes in a wall that separates a reshut hayachid from a reshut harabim. What if the hole is open to both domains?

The height of a reshut hayachid/reshut harabim

A kli as its own reshut.

The definition of a reshut harabim (public domain); what if only part of the area is covered?