A : Yes, it is possible and very easy to do. Our Keyplan 3D engine manage automatically what should be created as a separating or main base structural wall. Users do not have to think about that, there is no complex parameter or special menu to be understood, everything is done by our intelligent engine. You will see that the surface of any rooms takes into account when an interior wall is added, this is a unique feature on mobile application. It makes you surface calculation very accurate and very useful.