Hi Andy,
You need to change the "she uses" to "they use" or "he or she uses" as well.
I've corrected this on the Wiki version.
Thanks. That one actually had me confused not being a native English speaker, especially after some discussion about that started yesterday. Forgot to mention that in my mail (blame it on either lack of caffeine or on ZeroHero :-)).
Kind regards,
RinceWynd Peter Molenaar