Regarding the basic function of the *_LEXERs

Question

We are using Oracle Text to index XML documents that contain an "abstracts" group element. Each document can contain one or more abstracts written in a different language (primarily English, French and German). Thus a single document can contain multiple languages.
We are wondering if we need to use any of the various LEXER types to deal with the different languages. My understanding of the documentation is that MULTI_LEXER or WORLD_LEXER would not be appropriate, since they work on the document level. AUTO_LEXER documentation seems vague, however... would AUTO_LEXER be able to sense language changes within a document?
http://download.oracle.com/docs/cd/B28359_01/text.111/b28304/cdatadic.htm#i1007538
Or, perhaps I needn't be concerned at all, since English, French and German are all "whitespace deliimited languages"-- If the sole function of the lexer is to parse tokens, then is there really any difference between the English lexer and the French/German lexers?
Thanks.

Answer 1

Dear Nathand,
Thanks for your answer, I tried the change and you are right. That shows that this not a standard PID, since that means (and actually I can see it now by checking inside the vi) that it is not using the derivative of the error but the derivative of the process variable. I know that this is used sometimes to prevent the effect of fast changing set-points, but it is a shame that they do not comment on it in the help, and that this is not a selectable feature. Do you know if there is a way to edit these pre-packaged vi's? 
One more question, about the labview style. I included the sequences just to group terms and make the code more readable to separate the integrator from the derivator and not have a knot of entangled signals. Specially when I run the clean-up diagram, it gets very entangled. I have been looking for another way to do that (container boxes, groups). It would be nice if you could suggest me something I can do for it.
Thanks again,
Pablo