Ключевые слова: 3, app, arrow, badge, business, button, chart, circle, diagram, door, doorway, down, elevation, elevator, emergency, escape, evacuation, exit, extinguisher, fire, flat, floor, help, human, icon, infographic, information, label, level, lift, male, mark, open, presentation, pyramid, running, safety, set, shape, sign, staircase, stairs, stairwell, symbol, token, triangle, up,