What od you mean?

No od; 2D and 3D.

If you miss it, just look at the 3D view!

Didn't miss anything. Document not clear.

He's facing from the top of the wall.

So that is a top-down view? That makes the axes even more confusing. That means that when the user edits a wall properties, the x and y axes are not conforming to the width and height of the real world.

Is there some reason that the real world view cannot be maintained in the CAD functions?