- http://www.triptico.com/software/grutatxt.html (grutatxt)
- convert (from the http://www.imagemagick.org/script/index.php (ImageMagick) package)
- http://www.triptico.com/software/grutatxt.html (grutatxt)
- convert (from the http://www.imagemagick.org/script/index.php (ImageMagick) package)