Section 5 of First Robotics Competition Documents on page 12(
here) states "Traction devices may not have surface features such as metal, sandpaper, or hard plastic studs, cleats, or other attachments. Anchors, i.e. devices that are deployed/used to keep one’s robot in one place and prevent if from being moved by another robot,
cannot use metal in contact with the carpet or other playing surfaces to 'stay put.'"
Does this mean we cannot use metal casters?