Ключевые слова: abstract, approve, background, business, check list, check mark, clean, concept, creative, design, document, education, element, geometric, graphic, green, icon, illustration, information, internet, isolated, knowledge, learning, library, line art, literature, logo, logotype, media, modern, multimedia, office, open, paper, professional, publishing, school, sign, signage, simple, studio, study, symbol, technology, template, text, textbook, web, website,