Random additional historical note: The "Distiller" was originally some postscript code that PS developers could download to a PostScript RIP. It would sit there, resident until the printer was restarted. When Distiller was present, it would rewrite any PostScript code sent to it -- breaking it down into its simplest components and throwing away any extraneous data. Then it would send the new code back to the host computer. It was an ingenious piece of code (I still have "Distiller.ps" here on my machine for old times' sake).