Plus 2.X:Options
Under Colors/Transparency colors can be assigned to the different elements of the building for the illustration in the Visualization Box, user-defined colors can be added to the list of colors and the transparency of the illustration can be set.
Under View it can be decided whether only components defined in the according zone or all components adjoining the zone should be viewed. This is especially important for the viewing of single zones, as components can be adjoining a zone but belonging to the another. To check whether zones are closed the second option should be checked.
The "View when editing Openings/Windows" just sets whether the view in the component Openings window (!) should be from inside or outside. This setting can easily be changes in the component Openings window itself, too.
These Options can be altered by clicking on Options in the Menu bar as well.