THE ORIGINS OF THE Portable Document Format and the Adobe® Acrobat®
product family date to early 1990. At that time, the PostScript® page description
language was rapidly becoming the worldwide standard for the production of the
printed page. PDF builds on the PostScript page description language by layering
a document structure and interactive navigation features on PostScript’s underlying
imaging model, providing a convenient, efficient mechanism enabling documents
to be reliably viewed and printed anywhere.
The PDF specification was first published at the same time the first Acrobat products
were introduced in 1993. Since then, updated versions of the specification
have been and continue to be available from Adobe via the World Wide Web. This
book is the first version of the specification that is completely self-contained,
including the precise documentation of the underlying imaging model from
PostScript along with the PDF-specific features that are combined in version 1.3
of the PDF standard.