- For instance
  Fif exist zz%%4.ps DEL zz%%4.ps
  Fif exist zz%%4.ppm DEL zz%%4.ppm
  Fdvips -T 14in,14in -Ppdf -f %%1 -pp %%2 -o zz%%4.ps
  Fgswin32c -sDEVICE=ppm -sOutputFile=zz%%4.ppm -q -dbatch -dNOPAUSE zz%%4.ps -c quit
  Fmove zz%%4.ppm yz%%4.ppm
  Fpnmcrop yz%%4.ppm > zz%%4.ppm
  Fif exist %%3 DEL %%3
  Fppmtogif -interlace -transparent 1,1,1 zz%%4.ppm > %%3

- The specialized scripts may, for instance, maintain global caches of gifs for cutting down on recompilation time.