Ключевые слова: 3fold, advertising, background, banner, blank, booklet, brochure, business, card, corporate, cover, document, empty, flyer, fold, folder, gray, identity, information, layout, leaflet, letter, letterhead, marketing, menu, mock, mockup, note, office, open, page, pamphlet, paper, photo, presentation, print, publication, shadow, showcase, surface, template, up, white, zigzag,