> Provided that you will set only Greek and English text. That's not the problem: the issue is with the hyphenation patterns that are loaded are format generation time; if William has installed the full set of languages he has dozens of them, in various writing systems. He should really use unicode-letters.tex that has been devised for that exact purpose.
The cleanest way is probably to have a copy of xelatex.ini named xexmltex.ini, that loads xmltex.tex in addition; this way one can benefit from all the other settings that are done there (loading unicode-letters is only one of them). Arthur -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex