Graph -t problem

[Taed Nelson]

I'm using GRAPH, and I'm having problems with the -t option.  I would like
  to call it a bug, but this program has been around a while, so it seems
  that I'm merely expecting the wrong thing.

Let us say that "graph" give me:
	A B
	C D

I would expect "graph -t" to give me:
	B D
	A C

But instead it gives me:
	A C
	B D
  which is the same as the above, but a mirror image along the horizontal.

I'm pretty sure it's GRAPH that is causing the problems, because I get the
  same results if I use the PSPLOT or the LPR -G filters.

By the way, the text is correct in all cases, it's just the graph itself.

Does anyone have any clues as to how to fix it and/or if it is a bug?