>All chars 0x80 and above will put you into problems if you don't take proper precautions. Besides those special chars I mentioned before, if you want to go safe you should declare the encoding of your xml document. Its first line should be:
>

><?xml version="1.0" encoding="iso-8859-1"?>
>

>All parsers should understand this and act accordingly. Alternatively, you should check all of your text elements char by char and encode them as utf-8 (the default encoding for most parsers).

That worked. Thanks.