Ключевые слова: 3d, answers, art, business, check, checklist, choice, computer, contour, design, desktop, digital, display, document, exam, form, icon, illustration, incorrect, isolated, isometric, line, linear, lineart, list, mark, mistakes, monitor, mouse, notification, outline, paper, pc, pink, plus, questionnaire, report, ring, ringing, school, screen, set, sign, square, symbol, technology,