Ключевые слова: audience, audiovisual, background, board, business, cinema, classroom, color, conference, copy, demonstration, device, digital, entertainment, equipment, film, hall, home, indoors, lcd, lecture, lesson, media, meeting, modern, movie, multimedia, nobody, object, office, pink, prepared, presentation, projection, projector, room, screen, show, slide, space, system, table, technology, text, training, video, visual, wall, watching, work,