Ключевые слова: art, background, book, business, collection, concept, contour, design, document, drawing, education, element, equipment, file, flat, folder, graphic, icon, illustration, isolated, line, linear, management, manager, message, object, office, outline, paper, pen, pencil, process, school, set, sign, silhouette, simple, student, study, symbol, technology, thin, time, tool, web, work,