The Unpredictable Certainty White Papers (1997) / Chapter Skim
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Electronic Document Interchange and Distribution Based on the Portable Document Format, an Open Interchange Format
Electronic Document Interchange and Distribution Based on the Portable Document Format, an Open Interchange Format
Pages 605-617
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Electronic document interchange had been stuck in a typewriter world while printed documents increased in visual sophistication. In addition, much of the work on electronic documents has been on their production and not on their consumption.
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For these cases, interchange of final form electronic documents iS necessary. Requirement for Page Fidelity The key problem with interchanging only revisable form documents is the inability to guarantee page fidelity.
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These references will work for electronic documents only if page fidelity can be guaranteed. Many governmental bodies have built these references into their procedures and require that they be preserved, in electronic as well as in paper documents.
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Requirements for a Final Form Document Interchange Format For a final form representation to be a suitable electronic document interchange format for Me Nit, it should meet a number of requirements: . It should have an open, published specification with sufficient detail to allow multiple implementations.
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. It should be possible to create electronic documents ~ this fonnat using a wide range of document generation processes.
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The architecture for extension is indicated by He "search" plug-in, which allows access to indexes built by the cataloguing process. The Architecture for Document Preparation To be effective, any system for electronic document interchange must be able to capture documents In all the forms in which they are generated.
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For operating systems without a GUT interface to printing and for applications that choose to generate their print format directly, the PostScript language is the industry standard for describing visually rich final form documents. Therefore, the electronic document interchange format can be created by translating, or "distilling," PostScript language files.
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PDF, like the Adobe Illustrator file format, is based on Me PostScript language. PDF uses the PostScript language imaging model, which has proven itself over 12 years of experience as being capable of fai~fillly representing visually rich documents.
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These indirect objects can then be referenced by using the object number and generation number in place of the occurrence of the direct object. Indirect objects and indirect object references allow objects to be shared.
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The PDF File Structure Indirect objects and indirect object references do not allow direct access to the objects. This problem is solved by the PDF file structure.
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The Architecture for Extensions The Gird component architecture for final form electronic document interchange is He extension architecture for consumers of the electronic documents. Viewing a PDF document is always possible and the PDF specification defines what viewing means.
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As producers enable this pathway in their document production products, it will become standard to automatically translate the representation of navigational information in a document production product into the corresponding PDF representation of navigational aids. Another direction for future development is the inclusion of additional content types within a PDF file.
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For some applications, the PDF file might be the only storage format needed; it would be both revisable and final form. CONCLUSION The business case for final form electronic document interchange is relatively straightforward.
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