Let me set things straight: I asked for where flag 67 was used in dimension open, and he told me he looked in the VVVVVV file when he meant the .vvvvvv file. I said that I really wanted to see the .vvvvvv, not the VVVVVV file (the actual game), but I actually really DID wish I could see the VVVVVV file, so I asked that, too.
So forget all that.
What turns on flag 67 in dimension open?