Ключевые слова: abstract, background, blogging, book, business, commercial, communication, concept, copybook, design, desktop, digital, double, drawing, electronic, email, envelop, exposure, icon, information, internet, journal, learning, lifestyle, mail, math, message, multi, multitasking, notebook, notepad, online, place, relationship, seminar, send, sketch, social, spam, spiral, startup, symbol, tech, to do list, verification, wallpaper, web, webinar, world,