Ключевые слова: advise, advisory, ankle, ascend, ascending, ascent, caution, climb, descend, descending, descent, down, feet, flip flop, foot, footwear, knee, legs, notice, notification, notify, pair, plight, rubber, sandals, shoes, sign, signage, slippers, sneakers, sole, staircase, stairs, steps, symbol, up, warning, watch your step,