GPL 2.0/LGPL 2.1/MPL 1.1 tri-license

The contents of this software may be used under the terms of
the GNU General Public License Version 2 or later (the "GPL"), or
the GNU Lesser General Public License Version 2.1 or later (the "LGPL",
see COPYING.LGPL) or the Mozilla Public License Version 1.1 or later
(the "MPL", see COPYING.MPL).

The Plain TeX hyphenation tables "hyphen.tex" by Donald E. Knuth
has a non MPL/LGPL compatible license, but freely redistributable:
"Unlimited copying and redistribution of this file are permitted as long
as this file is not modified. Modifications are permitted, but only if
the resulting file is not named hyphen.tex."

Software distributed under these licenses is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the licences
for the specific language governing rights and limitations under the licenses.