'ppreciated !

if you do not draw a room you cannot add a floor, right ? Yes. Automatic floor generation may appear in a future version, but if it could be handy in many cases, I fear it could get worse for special cases like mezzanine, multiple floor in a room...

Thank you, is it possible to delete the area ...

I drew some walls of a room without actually drawing a room, but since I needed to put a floor I had to draw a room with the same dimension of the walls, so in other words if you do not draw a room you cannot add a floor, right ?
And one other thing, maybe it's me but, how do you create an image ...

Thank you Emmanuel.

Newbie here...
I am drawing walls, default thickness.
I measured the real room INTERNAL dimensions, but as far as I understand when drawing a wall the dimension refers to the CENTER of it, so how to draw walls in such a way that the resulting internal dimensions correspond to the real ones ?
Hope I ...