The *.ttf and COPYING files in this directory were copied from the X.org project, specifically http://xorg.freedesktop.org/releases/individual/font/font-bh-ttf-1.0.0.tar.bz2 There are three fonts: sans (s), serif (r) and monospaced (m). For example, luxisr.ttf is Luxi Sans. The 'r' here means regular, as opposed to bold. The *.ttx files in this directory were generated from the *.ttf files by the ttx command-line tool. http://www.letterror.com/code/ttx/index.html