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Document, Adobe Acrobat, and Text Files There are many computer document formats. The most common are 'TXT', 'RTF', DOC and 'PDF'. TXT or text files are files that hold text. The term text file is often used as a synonym for ASCII file, a file in which characters are represented by their ASCII codes. ASCII is a short name or acronym for American Standard Code for Information Interchange. In an ASCII text file each byte represents one character according to the ASCII code. Contrast with a binary file, in which there is no one-to-one mapping between bytes and characters. Files that have been formatted with a word processor must be stored and transmitted as binary files to preserve the formatting. ASCII files are sometimes called plain text files. TXT files can be created with almost all text editor or word processors. RTF is a standard formalized by Microsoft for specifying formatting of documents. RTF files are actually ASCII files with special commands to indicate formatting information, such as fonts and margins. Other document formatting languages include the Hypertext Markup Language (HTML), which is used to define documents on the World Wide Web, and the Standard Generalized Markup Language (SGML), which is a more robust version of HTML. RTF files can be created with almost all text editor or word processors. DOC files The Microsoft's Word® files with the 'doc' extension has evolved as on of world default standards. DOC files can be created with almost all text editor or word processors. PDF short for Portable Document Format, a file format developed by Adobe Systems. PDF captures formatting information from a variety of desktop publishing applications, making it possible to send formatted documents and have them appear on the recipient's monitor or printer as they were intended. To view a file in PDF format, you need Adobe Acrobat Reader, a free application distributed by Adobe Systems. |
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