Articles posted by Bill Patterson

Postscript

Postscript is a page description language developed by Adobe Systems, Inc. Documentation for Postscript can be found on the Adobe site at the following URL: http://www.adobe.com/devnet/postscript/ Additional information on Postscript can be found on the Fermilab site: http://www-cdf.fnal.gov/offline/PostScript/AdobePS.html

PDF/X

PDF/X is a subset of the Adobe Portable Document Format (PDF) specification that is intended to reflect best practices in graphic arts file exchange. PDF/X-1a restricts the content in a PDF document that does not directly serve the purpose of high-quality print production output, such as annotations, Java Actions, and embedded multimedia. See PDF/X for […]

eXtensible Metadata Platform (XMP)

eXtensible Metadata Platform is an XML grammar for representing document metadata. XMP is a subset of Resource Description Format (RDF).

Vector Image

One of two major graphic types. (The other type is a bitmap image). Vector graphics are made up of paths — mathematically defined lines and curves with specific start and end points. Line drawings and animations are examples of vector images.

Software Development Kit (SDK)

A software development kit is a set of programming tools which allow third party developers access to enhance or modify the behavior of an application or library. Typically, this is done without giving the third party developers access to the original source code of the application or library. See Acrobat SDK.

Redaction

“Redact – to obscure or remove from a document prior to publication or release” Source: Merriam-Webster’s Online Dictionary Redaction is a daily process for any organization which possesses, distributes or selectively releases classified, sensitive or private information. For example, the Freedom of Information Act (FOIA) mandates public access to many documents once sensitive content is […]

Recto Verso

Recto Verso is the process of printing or stamping on one side of odd-numbered pages and the other side of even-numbered pages, a typical practice for bound documents. All Appligent Document Solutions’ software that performs stamping can support Recto Verso stamping and numbering.

RC4 Stream Cipher

RC4 is the name of a symmetric key stream cipher algorithm.

Public Key Cipher

Public key is also known as public-private key. A cryptographic algorithm which uses two different keys to encrypt and decrypt information. Data encrypted using one key can be decrypted using the other key. The mechanism works in reverse as well. Typically, one key is kept private; while the other key is distributed to the public.

PDF/UA – PDF for Universal Accessibility – ISO 14289

PDF/UA is the ISO standard, ISO 14289-1 published in 2012, that provides a set of guidelines for producing universally accessible PDF documents as well as specifications for compliant assistive technology (such as screen readers, screen magnifiers, or joysticks) and PDF reading software. If the PDF/UA technical and semantic requirements are followed, universally accessible files can be created […]

PDF/E – PDF for Engineering

Proposed ISO standard tailored for complex engineering documentation used in manufacturing, AEC, and geospatial; subset of Adobe PDF 1.6. Addresses primary areas of concern: Accurate and predictable document behavior Review and commenting support Including complex 3D and metadata in PDF Participants include Adobe, Bentley, Solidworks, Autodesk, Hewlett Packard, Océ, Intel, US Army Corps, NGA, UGS, […]

PDF/A – PDF Archive

PDF/A is an ISO standard that specifies the use of PDF for the long-term preservation of compound documents as electronic data. The key requirement for PDF/A documents is complete self-containment such that all information necessary for consistent long-term display is embedded in the file. PDF/A-1 is currently based on Adobe’s PDF 1.4. PDF/A-2 and PDF/A-3 are based on […]

PDF – Portable Document Format

There’s so much to PDF it is difficult to define precisely. Following is the official definition from the PDF Reference 1.6 Chapter 2: “THE ADOBE PORTABLE DOCUMENT FORMAT (PDF) is a file format for representing documents in a manner independent of the application software, hardware, and operating system used to create them and of the output […]

OCR – Optical Character Recognition

Optical Character Recognition (OCR) is the process of reading printed, typed or handwritten text (usually by scanning) and translating it into an electronic format that can be manipulated by a computer.

Message Digest

A message digest is a mathematical function that creates a fixed length data item, also known as a one-way hash, in a PDF document when it is digitally signed. Any tampering or changes in the document will result in a different message digest alerting Acrobat or the Reader that the document has been changed.

ISO 32000

Portable Document Format (PDF) is now ISO 32000-1:2008 based on the PDF Reference 1.7., an International Standard and a publication of the International Standards Organization (ISO). The document is managed by a democratically organized and open committee of subject matter experts through ISO’s Technical Committee TC 171, Administered by ANSI and AIIM. The official document may be purchased from the ISO website: ISO […]

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