Ключевые слова: abstract, background, brown, business, certificate, closeup, communication, confidential, confidentiality, data, document, envelope, file, grunge, hide, information, ink, letter, lock, macro, office, old, organization, paper, paperwork, personal, print, privacy, private, protection, red, restricted, safe, safety, secret, secure, security, stamp, text, texture, textured, vintage, word, work,