We're on the cusp of coming up to AC21 (currently on AC19), and I've been playing around a little with 20&21.
I've always done my walls on separate layers (internal, external, masonry, ect) and so I've never really bothered with the position classification.
What are the advantages of doing it with a property value?
The only difference I can think of would be you're unable to independently switch off or wireframe the groups of walls (through the layer manager)... or am I missing something about the properties values? Can they manipulate the walls display through graphic overrides (more than just picking the pens and fills).
AC 24 5004 AUS
iMac OSX (10.13.6) 4.2ghz i7
8gb ram/8gb vram