Hi
The Adobe PDF Settings dialog box in Acrobat Distiller contains panels of options that you can select to customize your PDF output. Use this panel to select a version of Acrobat for file compatibility and other file and device settings. Sets the compatibility level of the PDF. Use for PostScript files to emulate resolutions based on the printer they are printing to. Permitted values range from 72 to 4000. Use the default setting unless you plan to print the PDF on a specific printer while emulating the resolution defined in the original PostScript file.