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PDF20 Spec 05 Version
Part of: PDF20-Spec-Index
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5 Version designations For the convenience of the reader of this document, the PDF versions in which various features were introduced are provided informatively within the document. The first version of PDF was designated PDF 1.0 and was specified by Adobe Systems Incorporated in the PDF Reference 1.0 document published by Adobe and Addison Wesley in June 1993. Since then, PDF has gone through seven Adobe revisions designated as: PDF 1.1, PDF 1.2, PDF 1.3, PDF 1.4, PDF 1.5, PDF 1.6 and PDF 1.7. All nondeprecated features defined in a previous PDF version were also included in the subsequent PDF version. ISO 32000-1 defines a PDF version matching 1.7. This document defines a new version of PDF designated 2.0. This document is also suitable for interpretation of files made to conform to any of the previous Adobe PDF specifications 1.0 through 1.7 and ISO 32000-1. Throughout this specification, in order to indicate at which point in the sequence of versions a feature was introduced, a notation with a PDF version number in parenthesis (e.g., (PDF 1.3)) is used. Thus if a feature is labelled with (PDF 1.3) it means that PDF 1.0, PDF 1.1 and PDF 1.2 were not specified to support this feature whereas all versions of PDF 1.3 and greater were defined to support it.
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ISO 32000-2:2020(E)
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