At 18.45 +0100 01-02-24, Chris Rowley wrote: >Can we agree that one question we need to ask is: > > what is LaTeX's Internal Representation of all `math-mode token lists'? Yes. With the current LaTeX character handling, there is an ambiguity on the input side---hence my remarks about that---but the matter should rather be delt with on the output side. I very much agree with: >We should probably pin this down before venturing into Unicode for >math-mode. Lars Hellström