Intégrité

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Adobe has a number of patents covering technology that is disclosed in the Portable Document Format (PDF) Specification, version 1.3 and later, and hence in the ISO 19005-1 specification by reference. http://www.digitalpreservation.gov/formats/fdd/fdd000125.shtml

PDF/A-1, PDF for Long-term Preservation, Use of PDF 1.4