When you are in the 2D (Floor/Wall/Surface 2D) window, you can easily change your view by moving the mouse on the border of the current area. In the next image, in fact, you can see that if you move the mouse over a wall, a yellow area will appear; if you click that area, the window will upgrade showing you the wall you have just selected. Same option can be used when you are working on a wall, in order to move to the left or right one, or back to the floor. In this way you can change the operating area very quickly while remaining in the 2D window.
This article is valid for DomuS3D® 2017 and later versions