ColorSpan Legacy Printing Tools - User Guide for Macintosh OS

PostScript Printer Description Files B-5
PDFs are files created for use with QuarkXPress. They are
required for QuarkXPress versions 3.2 and earlier and can also
be used with versions 3.3 and 3.31. Quark provides a tool that
helps in the creation of PDFs called MakePDF. PDFs were origi-
nally called XPDs. PDFs are binary files with the data stored in
the resource fork.
There are two types of PDF files: one containing fixed paper
sizes and one that allows creation of variable (custom) page
sizes. Some engines have both, some just the former. For
PressMate-
FS, these also came in the color and black-and-white
versions.
QuarkXPress PDFs are included on the Software DVD-ROM,
but they are not installed by the installer. The last PDFs distrib-
uted by were for the Giclée PrintMakerFA.