1.4.4 Portable Document Format (PDF) Adobe has specified another format, PDF, for portable representation of electronic documents. PDF is documented in the Port

1.4.4 Portable Document Format (PDF) Adobe has specified another format, PDF, for portable representation of electronic documents. PDF is documented in the Portable Document Format Reference Manual. PDF and the PostScript language share the same underlying Adobe imaging model. A document can be converted straightforwardly between PDF and the PostScript language; the two representations produce the same output when printed. However, PDF lacks the general-purpose programming language framework of the PostScript language. A PDF document is a static data structure that is designed for efficient random access and includes navigational information suitable for interactive viewing. -- https://www.adobe.com/jp/print/postscript/pdfs/PLRM.pdf https://www.adobe.com/jp/print/postscript/pdfs/PLRM.pdf