+1 to that – in the document's note sections there are a lot of typographical rules of style/aesthetic rules of thumb that are probably out of the scope of a W3

+1 to that – in the document's note sections there are a lot of typographical rules of style/aesthetic rules of thumb that are probably out of the scope of a W3C-style purely algorithmic specification, are very useful (e.g. indentations, conventional head/subhead/running section formatting, etc.)