How to change to count my drawing from the center of the wall

[MrGlad8]

Heya! So I just realised the rooms I create had wrong measurement. Didnt get why. But now I realise the wall-drawing is done from the MIDDLE of the wall. So stupid. I dont care how thick my walls are, frankly I dont know how thick they are. So how do I change it so that I draw walls based on the inner of the wall? I hope you get what I mean

[sjb007]

Create a room using the appropriate tool, and the correct measurements.
ASwitch to the wall tool and double click the room. Walls will be created with the correct internal dimensions.

HTH

[Keet]

This was answered in the previous topic https://sweethome3d.com/support/forum/viewthread_thread,12407 .
Check the mini-tutorial provided by Dorin in his comment.