A method of drawing that uses GPS to create large scale drawings. Global Positioning System receivers record one's position on the surface of the planet by trilateration of microwave signals from satellites orbitting 14000 km above the atmosphere. Tracks of a journey are automatically recorded into the GPS receiver's memory and are subsequentially downloaded onto an electronic computer and are turned into a drawing, sculpture or animation. The idea was first implemented by artists Hugh Pryor and Jeremy Wood who have been drawing a 13 mile wide fish in Oxfordshire, spiders whose legs reach across cities, and also they have provided an answer to the question "What is the world's biggest "IF"?" It happens to be a pair of letters "I", which goes from Iffley in Oxford to Southampton and back, and "F" which traverses through the Ifield Road in London down to Iford in East Sussex, through Iford and back up through Ifold in West Sussex. The total length is 537 km, and if the height of the drawing was translated into the point size it would be 319,334,400 points. The text you are reading is about 10 points.