It would help a lot in citing the standard if every heading outside the code charts had a section number.
Please, what did you meant with “heading outside the code charts”?
Do you know if there exist the same Unicode Standard we have as PDF, in a markup format ? (preferably XML or (x)HTML) ?
Just wanted to add that the UAXs are already HTML after‑all, so the Unicode Standard could be as well (but I don't know how it is authored, and there may be technical issues or too much work for the standard maintainers).