Walls can be embedded into a host wall, so that the embedded wall is associated with the host wall.
For example, a curtain wall can be embedded into an exterior wall, or a wall can be embedded into a curtain panel.
Like doors or windows in the host wall, the embedded wall does not resize if you resize its host. If you move the host wall, the embedded wall moves with it.
Note: You can embed a wall in an elliptical wall by picking the elliptical wall. However, you must manually cut the host wall with the embedded wall.
Curtain wall embedded in host wall
Note: This GIF illustrates a curtain wall being embedded into a basic wall to make a "storefront".