Ключевые слова: administration, app, application, black, book, booklet, bookmark, business, checkmark, concept, cross, design, document, drawing, flat, government, guide, guideline, icon, illustration, information, instruction, isolated, label, law, legal, line, list, management, mobile, nobody, note, object, page, reading, recommendation, regulation, rule, rulebook, sign, simple, symbol, text, tick, web, white,