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PDF 2.0 defines 256-bit AES encryption as the standard for PDF 2.0 files. The PDF Reference also defines ways that third parties can define their own encryption systems for PDF. PDF files may be digitally signed, to provide secure authentication; complete details on implementing digital signatures in PDF are provided in ISO 32000-2.
A 1939 Certificate of Life from the British Embassy in Paris. The fee has been paid through the application of revenue stamps.. A Certificate of Life (also called a Certificate of Existence, Letter of Existence, Life Certificate, Proof of Life) is a certificate produced by a trusted entity to confirm that an individual was alive at the time of its creation.
.doc (an abbreviation of "document") is a filename extension used for word processing documents stored on Microsoft's proprietary Microsoft Word Binary File Format; it was the primary format for Microsoft Word until the 2007 version replaced it with Office Open XML.docx files. [4] Microsoft has used the extension since 1983.
Certificate of origin means a specific form identifying the goods, in which the authority or body empowered to issue it certifies expressly that the goods to which the certificate relates originate in a specific country. This certificate may also include a declaration by the manufacturer, producer, supplier, exporter or other competent person;
The first RTF reader and writer shipped in 1987 as part of Microsoft Word 3.0 for Macintosh, which implemented the RTF version 1.0 specification. All subsequent releases of Microsoft Word for Macintosh, as well as all Windows versions, can read and write in RTF format. Microsoft maintains RTF.
Letters patent issued by the United States United States General Land Office. The primary source of letters patent in the United States are intellectual property patents and land patents, though letters patent are issued for a variety of other purposes. They function dually as public records and personal certificates. [citation needed]
A letter of recommendation or recommendation letter, also known as a letter of reference, reference letter, or simply reference, is a document in which the writer assesses the qualities, characteristics, and capabilities of the person being recommended in terms of that individual's ability to perform a particular task or function.
Apache OpenOffice from version 3.0 can import Office Open XML files but not save them. [46] Version 3.2 improved this feature with read support even for password-protected Office Open XML files. [47] [48] [49] The Go-oo fork of OpenOffice could also write OOXML files. KOffice from version 2.2 and later was able to import OOXML files.