Ключевые слова: abstract, award, backdrop, banknote, blank, card, classic, coupon, curves, decorative, design, diploma, elegant, element, engraving, geometric, gift, graphic, guilloche, illustration, label, line, microprint, modern, money, optical, ornament, paper, passport, pattern, print, protection, repeat, symmetric, texture, ticket, vintage, voucher, watermark, wave, wrapping, zag, zig, zigzag,