Ключевые слова: abstract, architecture, arrow, backdrop, background, black, concept, construction, danger, design, direction, directional, door, doorway, emergency, equipment, escape, exit, fire, graphics, green, guidance, icon, illuminated, information, isolated, label, light, man, pattern, protection, rescue, running, safety, security, shadow, sign, silhouette, step, structure, symbol, textural, texture, urgency, walk, walkway, wallpaper, warning, way,