The MacPlot plotter driver included with Claris software does not include a print-to-disk capability. However, MacPlot Professional from Microspot does allow printing to an HPGL file on disk. Call Microspot at 800-622-7568 (Sales).
Microspot can be contacted at:
Suite 6
12380 Saratoga-Sunnyvale Road
Saratoga, CA 95070
(800) 622-7568 Sales
(408) 253-2000 voice
(408) 253-2055 fax
(408) 257-4000 Technical Support