The official guide to the Portable Document Format This revised and expanded book from Adobe Systems describes the Portable Document Format (PDF), the native file format of the Adobe(R) Acrobat(R) family of products. These products enable users to exchange and view electronic documents easily and reliably, independently of the environment in which they were created. PDF builds on the PostScript(R) page description language, layering a document structure and interactive navigation features on PostScripts underlying imaging model. Aided by the explosive growth of the Internet, and with well over 100 million copies of the Acrobat Reader application distributed around the world, PDF has become the de facto standard for electronic document exchange. Since the PDF specification was published in 1993, updates have been available from Adobe via the Web. However, this book is the first publication of the specification that is completely self-contained, including the precise documentation of the imaging model from PostScript along with all the PDF-specific features combined in version 1.3 of the PDF standard. This comprehensive specification has been extensively reorganized and revise