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History of PDF. The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008. Since then, it has been under the control of an International Organization for Standardization (ISO) committee of ...
HTML Form format HTML 4.01 Specification since PDF 1.5; HTML 2.0 since 1.2 Forms Data Format (FDF) based on PDF, uses the same syntax and has essentially the same file structure, but is much simpler than PDF since the body of an FDF document consists of only one required object. Forms Data Format is defined in the PDF specification (since PDF 1.2).
September 1994. First version for Windows 3.1. Windows, Mac, SunOS, Solaris, HP-UX, IRIX, AIX, OS/2. Acrobat Catalog, which creates searchable indexes for PDF files. Adobe also released the first Acrobat Plug-ins SDK; allowing third-party developers to create plug-in programs for the Acrobat Exchange application. 3.0.
Acrobat Messenger is a document utility for Acrobat users that was released by Adobe Systems in 2000 to convert paper documents into PDF files that can be e-mailed, faxed, or shared online. Acrobat Reader Touch is a free PDF document viewer developed and released on December 11, 2012, by Adobe Systems for the Windows Touch user interface.
National standard format is yyyy-mm-dd. [161] dd.mm.yyyy format is used in some places where it is required by EU regulations, for example for best-before dates on food [162] and on driver's licenses. d/m format is used casually, when the year is obvious from the context, and for date ranges, e.g. 28-31/8 for 28–31 August.
Adobe kept the PDF as a proprietary file format from its introduction until 2008, when the PDF became an ISO international standard under ISO number ISO 32000-1:2008, though the PDF file format was free for viewers since its introduction. [23] [24]
PDF is a standard for encoding documents in an "as printed" form that is portable between systems. However, the suitability of a PDF file for archival preservation depends on options chosen when the PDF is created: most notably, whether to embed the necessary fonts for rendering the document; whether to use encryption; and whether to preserve additional information from the original document ...
In traditional American usage, dates are written in the month–day–year order (e.g. September 7, 2024) with a comma before and after the year if it is not at the end of a sentence [2] and time in 12-hour notation (8:12 pm). International date and time formats typically follow the ISO 8601 format (2024-09-07) for all-numeric dates, [3] write ...