But within each language it is well defined. Between languages, even the letters have different uses. Diacritics can be used to signal a different sound or the

But within each language it is well defined. Between languages, even the letters have different uses. Diacritics can be used to signal a different sound or the tonicity of the word (at least in the languages I know those are the two uses). I don't understand what this thread is all about. English doesn't need accents because there's no universal meaning attached to each one? That doesn't make sense.