I remember reading that someone called ADA, and that they said that we can do whatever we want with the paper!
I don't know what to believe! I would call them though, and ask them yourself. They're the ones that are in charge, not the proctors at the Sylvan Testing Center!
I took the DAT on Saturday and had no problem using the paper any way I wanted to. I asked specificly if I could touch the screen and hold paper up to it and they said go right ahead. On the angle ranking I used the corner of my scratch paper to help me figure them out!