This manual was written in DocBook. Perl and GNU Make were used to manage the set of files involved. The SGML source files were processed by openjade and jadetex using Norman Walsh's stylesheets. Screenshots have been taken using xwd and GIMP and converted with convert (from the ImageMagick package). PostScript files were produced with dvips. All this software is available on your Linux-Mandrake distribution, and all parts of it are free software.