Ключевые слова: abstract, background, ball, black, business, cartography, circle, communication, computer network, concept, design, earth, frame, geography, geometry, global, global communications, globe, graphic, grid, icon, icon set, illustration, internet, isolated, latitude, map, meridian, net, planet, science, shape, sign, simplicity, sphere, symbol, topography, travel, wire, wireframe, world, worldwide,