Ключевые слова: audiovisual, background, blank, blue, board, boardroom, business, classroom, colour, communication, computer, conference, corporate, digital, display, education, empty, equipment, event, horizontal, indoors, information, interior, lamp, learning, lecture, lens, light, meeting, modern, multimedia, office, overhead, perspective, presentation, projection, projector, ready, room, screen, seminar, show, slide, study, table, technology, video,