ARCHICAD has really improved our ability to design and edit in 3D. I personally feel the program has always been at the forefront of architecture in this regard, but recent updates have made subtractive-additive form-making even more fluid. Essentially raised on ARCHICAD, we have been watching our father/inspiration create amazing designs with this software since before the turn of the century, V5 1994′-6′ I believe. . . Since then we have built spaces with our own hands that he modeled for us; stairs the pantheon would be proud of and green roofs, etc. This tool really has enhanced design after we sketch and scribble to a whole new level and makes communication of the finished product to engineers, clients and contractors seamless through BIMx. Thanks for all the new tool upgrades, especially the stair tool !! Keep up the great work design team.