How to setup international keyboard in Linux or Unix with Xmodmap and
XKB written by (c) Juraj Sipos. The Xmodmap is a file that XFree86
reads in order to give you a keyboard layout. This solution will work
for you in setting up any international keyboard for (Debian, RedHat,
Mandrake, CorelLinux) Linux, FreeBSD, OpenBSD, NetBSD and possibly
every Unix that uses XFree86. The advantage of this howto is that it
is not architecture specific and will work on all other systems.