Ключевые слова: 3d, art, board, business, circle, classroom, computer, concept, contour, design, developers, document, education, fax, flat, green, group, icon, illustration, isolated, isometric, lecture, line, linear, lineart, machine, management, office, outline, page, paper, person, presentation, print, project, round, school, seminar, set, speaker, symbol, teacher, teamwork, technology, work,