I would think it would be an available function in FSX. I can't see a simmer sitting there recording all that data, particularly the height, on a piece of paper simply to edit it into a photo.
Since I don't have FSX up and running yet, I can't test this but, where does the Shift+Z toggle (Cycle Coordinates/Frame Rate) display? If it's not in that corner, is it undockable/editable to enable it to be placed in that position? Just a thought.