Wolfgang Schuster wrote:

\Mywordstyle is a font switch:
\def\Mywordstyle #1 {\switchtobodyfont[GentiumItalics]{#1} \switchtobodyfont[Gentium]}


Do you really want a font switch, isn't a style switch enough in your case
from roman to italic and back.

Since I also need to be able to switch to a Non-Roman script I do need a font switch here (that's also the reason why I use XeTeX and MKII.) Anyway when I use \Mywordstyle inside the FormatSpan like this:

    [\XMLpar{span}{class}{}]
    [word=>\let\FormatSpan\Mywordstyle,
     defenition=>\let\FormatSpan\Mywordstyle,
     xlanguagetag=>\let\FormatSpan\Mywordstyle]%

the font change is applied to the "word" and "xlanguagetag"-items, but not to the definition-item!?(see attachment) Any idea why and how to solve this? (And it looks like there is some unwanted extra space inserted between the "word" and "xlanguagetag" as well.)

Jelle