Unfortunately, as I mention at the post http://forums.karamasoft.com/ShowPost.aspx?PostID=9451, we cannot implement the second suggestion, because our site needs the globalization request and response encondings at the web.config set to ISO-8859-1. The same is valid for the encoding of the HTML itself.The strange behaviour is that the characters are sent right to UltimateSpell, then they are escaped using s=escape(s), sent to the UltimateSpell.callback.aspx and when the call returns we see that the characters have been changed to ??? and they are underlined, denoting an error with spell as you type.Is there a way to force to ignore words not written in the characters accepted by the language we set Ultimate Spell to work?This is really important for us because our site should accept characters like ΩΦθThanks in advance.