Ключевые слова: background, board, business, businessman, calculate, concept, crayon, creative, creativity, diagram, draw, drawing, education, hand, human, idea, internet, leadership, male, man, marketing, meeting, message, note, office, pen, pencil, people, person, plan, planning, presentation, process, professional, seminar, sign, sketch, student, success, teacher, technology, text, think, wall, whiteboard, write, writing, young,