Hans, > Expressions like "Chapter~3" should be output using special commands, > preferably using a label \chapter{foo-bar}, or whatever, so that they both this is true, but in my opinion irrelevant for the discussion at hand. what you are pointing out is how a document should be logically tagged but we are talking about a different layer of a document. your opinion is that natural language doesn't contain digits; those who have argued believe you are mistaken. Just like `a' might be semantically a variable belonging to a formula, even if the formula is just consisting of this variable, it might alternatively be the letter a or indeed the word a. Why do you accept the latter but claim that this can't be true for digits? frank