AI OnAI Off
I don't know for sure, but here are some tricks that might work: Use CDATA elements, html-encoded values ('>' etc.) or .net style hex codes ('\x59' etc.)
Yes, as mentioned above by Magnus, it is possible. You just need to HTML Encode your text. Here is a free tool where you can do it:
http://www.opinionatedgeek.com/dotnet/tools/htmlencode/encode.aspx
Is it possible to insert html into the language xml's? For example:
<node>Upload <b>images/b> here</node>