Ключевые слова: alert, assist, background, blind, box, braille, button, circle, concept, crime, danger, dot, down, emboss, emergency, equipment, evacuation, fire, glass, halarm, hazard, help, indicators, industrial, line, metal, object, outdoor, panic, pattern, prevention, print, push, red, rescue, safety, security, sign, switch, symbol, system, tactile, technology, texture, urgency, wall, warning, white, yellow,