Ключевые слова: abstract, business, businessman, caucasian, communications, concept, concepts, construction, creativity, design, designer, document, drawing, education, engineering, finger, gear, hand, human, ideas, industry, leadership, machine, manager, marker, mechanical, mechanism, office, organization, page, pattern, pen, pencil, people, person, plan, planning, shape, showing, sketch, sketching, symbol, teaching, technical, technology, thumbnail, transparent, white, whiteboard,