Licensing:PlainTeX

License Text
% The Plain TeX hyphenation tables [NOT TO BE CHANGED IN ANY WAY!] % 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.

or

%%%  license   = "Unlimited copying and redistribution of this file %%%                are permitted as long as this file is not %%%                modified.  Modifications, and distribution of %%%                modified versions, are permitted, but only if %%%                the resulting file is renamed.",