This page applies to Harlequin v13.1r0 and later; both Harlequin Core and Harlequin MultiRIP.
PDF is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. It was largely based on the PostScript language. As such, PDF and the PostScript page description language share the same underlying Adobe imaging model. To improve performance for interactive viewing, PDF defines a more structured format than that used by most PostScript language programs.
PDF files do not encode information specific to the software, hardware, or operating system used to generate or view the document. PDF also includes objects (such as annotations and hypertext links) that are not part of the page itself but are useful for interactive viewing and document interchange. Each PDF file contains a complete description of a 2D document that includes the text, formats, fonts and images that make up the document.
PDF also serves as a page description language: a language for describing the graphical appearance of pages with respect to an imaging model.