Curtain Wall - elevation above current floor

Right, there's the elevate command.

Still, the problem is that there's no readout of the current elevation above floor.
Accidentally, I'm dealing with an existing split-level situation and the only moment AC will ask for curtain wall bottom/top elevation is during the creation process, via dedicated dialog box. A half-baked portion of the cake, or was it supposed to work this way, I don't know.

Thank you Dwight

As the CW can have any orientation in the space, (and it can be curved and multi-surface too) I think this is a "wanted un-feature"
Too difficult to say wich point would be the reference for the elevation, after some 3D rotation.

No odometer on my Batmobile...