Actually, I guess even selectively reversing sense of commands wouldn't always work. While "draw last" for no-overwrite would definitely put it visually behind existing stuff, "draw first" has no guarantees of anything, since it always depends on the no-overwrite statuses on all the remaining overlapping graphics. Heck, even "to back" for normal rendering doesn't necessarily guarantee it'd always visually go to back--not if all other overlapping graphics are all no-overwrite.
So really, I guess the only possible accurate way to talk about them is "draw last"/"draw first".