Issued April 1st, 1990
"The IP datagram is printed, on a small scroll of paper, in hexadecimal, with each octet separated by whitestuff and blackstuff. The scroll of paper is wrapped around one leg of the avian carrier. A band of duct tape is used to secure the datagram's edges. "
"Upon receipt, the duct tape is removed and the paper copy of the datagram is optically scanned into a electronically transmittable form."