Note that for generating output for a high-resolution typesetter, high-resolution
bitmapped fonts and high-resolution bitmapped graphics are required. 4TeX provides
only a small set of ready-made bitmapped fonts in resolutions higher than 600dpi;
you may have to generate your own, using Metafont or ps2pk. See Section 6.2.2 for
details on the use of scalable PostScript fonts.