Ключевые слова: abstract, approval, artstica, authenticity, award, backdrop, background, badge, bank, bill, cachet, certificate, certification, contract, copy, currency, curve, decoration, design, digital, diploma, document, elegant, element, engraving, floral, graphic, guilloche, illustration, label, line, money, note, ornament, ornate, passport, pattern, protection, rosette, safety, seal, secure, signature, single, template, texture, thesis, voucher, watermark,