[Tristan Lall]

I saw that in the webcast this morning too. I couldn't get a screen capture to work right, for some reason--otherwise I would have posted and made the same inquiry.

For reference, it appears to be a 4 ft. square taped on the ground, at the four locations, instead of a triangle.

Actually, I think that this is a better idea, as safety goes; it's counterproductive for the human player to have to watch his feet when he's trying to safely load a robot, to avoid penalties incurred by stepping out. That doesn't make it strictly legal, but it is understandable. Perhaps the head referees' teleconference yielded this suggestion?