4.1 Unix
 4.2 Windows
 4.3 Private (on SUN)
 4.4 Script: dvips + gs
 4.5 Script: dvips + gs + convert
 4.6 PNG Script: dvi + gs
 4.7 Script: netpbm
 4.8 Script: dvipng
 4.9 SVG Bitmap Conversion Scripts
 4.10 Request Scripts
 4.11 Alternative Scripts