ok thanks for the confirmation! in the meantime i've prepared my door with the first prefix you wrote, so if ever will be possible, i'll be already there![font=courier new]sweethome3d_window_mirror_on_hinge_[/font] or [font=courier new]sweethome3d_mirror_on_hinge_[/font] prefixes don't exist, so you can't make a mirror turn yet.
I'll see if it's possible in a coming version.
I just have to remember to not rotate the door!
thanks!