Ключевые слова: arrangement, attached, backgrounds, black, blue, brown, buttons, circles, colors, component, connection, connexion, dark, defended, design, elements, flat, gray, green, guarded, icons, intercommunication, joint, liaison, light, linkage, matching, module, multicolored, multicolors, particle, pictograms, piece, plain, polychrome, protected, red, round, safe, secured, shades, structure, symbols, technology, unit, varicolored, varicoloured, white, yellow,