Ключевые слова: 21, agenda, background, black, business, calendar, concept, date, day, deadline, dec, december, design, desk, diary, element, event, graphic, holiday, icon, interior, light, meeting, modern, month, note, number, office, page, paper, pattern, plan, relax, remind, reminder, schedule, sign, space, surface, symbol, tab, table, texture, textured, time, twentyone, wall, white, wood, year,