SH3D newbie creating my first floor plan. I have learned that rooms are defined by walls, and how to apply floor coverings to selected rooms. Now I want to transition between the two floor coverings in an open area; it's not delineated by a wall.

Is there any way to accomplish that task? For now, I've created an imaginary wall, but it does not look good in the 3D view.

Very impressed by this software!