I spoke with the graphics dept. here at Adobe regarding your question about
large graphic images. It was suggested that you output to the Linotronic
onto clear film or Lino paper, you could then make a copy onto vellum.
There are currenly no electrostatic plotters available with PostScript, but
you may want to investigate a product called Quick-plot by Taylored
Graphics (408)761-2481. This product can take an EPSF file (i.e. from
Adobe Illustrator) and translate it to a variety of plotter languages, such
a HPGL.