Ключевые слова: abstract, accounting, agenda, app, article, board, business, button, check, checklist, clipboard, concept, content, design, document, documentation, emphasize, flat, form, game, goods, graphic, group, icon, interface, isolated, list, mark, media, mobile, modern, network, note, paper, phone, questionnaire, record, reminder, report, set, sign, smartphone, stitch, symbol, tablet, task, tick, web,