Adobe相关软件英文专业术语.pdf

Glossary of PDF Terminology Aquaforest Limited Glossary of PDF Terminology Background The PDF format was created by Adobe in 1993 for the purpose of portable document exchange between systems and applications. The PDF specification has been updated and published and Adobe over the years but PDF is now an open standard that was officially published on July 1, 2008 by the ISO as ISO 32000- 1:2008. PDF documents involve a wide range of technical areas which this Glossary seeks to explain. Glossary of PDF Terminology (1.0.0) Page 2 of 30 Glossary of PDF Terminology A To address the needs of visually impaired and other users who must employ Accessibility assistive technology in order to read, the U.S. Congress passed Section 508 in 1998, an amendment to the Rehabilitation Act. Section 508 requires U.S. Federal government agencies to procure accessible software and to produce accessible electronic documents. PDF includes several facilities in support of Section 508 and accessibility of documents to users with disabilities. In particular, many computer users with visual impairments use screen readers to read documents aloud. To enable proper vocalization, either through a screen reader or by some more direct invocation of a text-to-speech engine, PDF supports the following features: Specifying the natural language us