How to add truetype fonts in YDL
All done as "root"
1.  Create a subdirectory in /usr/share/fonts - e.g.
    /usr/share/fonts/myttf
2.  Copy *.ttf to /usr/share/fonts/myttf
3.  cd /usr/share/fonts/myttf
4.  ttmkfdir >fonts.scale
5.  mkfontdir
6.  chkfontpath -a /usr/share/fonts/myttf
7.  Logout and restart the X Server (ctrl-alt-backspace)