Ключевые слова: abstract, ask, asking, banner, blackboard, business, chalk, chalkboard, communication, concept, conceptual, creative, crumpled, design, frequently, grunge, help, ideas, information, innovation, mark, message, note, notice, office, paper, problem, query, question, question mark, red, school, scissors, sheet, sign, solution, sticky, strategy, symbol, text, think, thinking, type, white, why, word, yellow,