What kind of file format is a Adobe PDF?
Portable Document Format (PDF): The PDF format is modeled after the PostScript language and is both device and resolution independent. Publications in the PDF format can be viewed, navigated and printed from a workstation using the freely available Acrobat Reader software from Adobe Systems Inc. Versions of Acrobat Reader run on Windows 95, Windows NT, Windows 3.1, Macintosh, LINUX, IBM AIX, Sun SPARC SunOS, Sun SPARC Solaris, SGI IRIX, HP-UX, Digital Unix and OS/2 Warp.