Ключевые слова: accident, book, business, closeup, colorful, concept, construction, danger, dangerous, design, desk, education, engineer, equipment, factory, handwritten, health, helmet, idea, illustration, industrial, industry, job, marker, message, note, notepad, notes, notice, office, paper, plan, protect, protection, protective, reminder, safety, school, security, sign, stationery, sticky, sticky notes, symbol, text, work, worker, workplace, workspace, write,