Glossary

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PDF
A three-letter extension to a software file name indicating to the system that the file type is one of the Portable Document Formats originally developed by Adobe. PDF is widely used for pre-print and archival purposes, as well as for portable documents. PDF/A ("Archival") is now ISO 19005-1:2005 and PDF/X is standardized as ISO 15929 and 15930. See generally White Paper PDF Primer by PDF Tools AG. PDF is expected to be succeeded by XML-based formats, with Adobe Mars and Microsoft XPS as leading contenders.