Ключевые слова: architecture, arrow, attached, background, board, building, buildings, communication, community, danger, dark, directional, door, doorway, electronic, emergency, entrance, escape, evacuation, exit, exits, go, green, hallway, icon, illuminated, indicator, inside, instruction, interior, isolated, leave, light, lighted, marker, out, outside, points, public, route, run, safety, security, showing, sign, symbol, text, walkway, wall, warning,