I created a house and put doors (inside and around the perimeter). Later I added a 1 meter foundation under the house by creating a 1 meter wall directly under the outer wall of the house.

I have found if I show all levels, the doors that are on level 0 (above the foundation), no longer are shown ...

Never mind, I seem to have had this problem before in a different context but the solution also worked here: http://www.sweethome3d.com/support/foru ... read,11421

I created a house with a level 0 and a level 1. For the exterior walls of the house, I simply extended them the full height from level 0 up into level 1.

However, I also created a balcony that wraps around level 1 by creating walls and a room within those walls. I can see what the house itself will ...

I am making a house with a courtyard in the middle. In order to see the difference between the open and closed areas, I want the ceiling of the first level/floor of the second level where it is not open to be opaque when I view it as a virtual visitor. How can I achieve this?