Comma jurisprudence

In BasicLegal Writing, First Edition (2002) by Mauricio C. Ulep, the author listed 42 guidelines on the proper use of the comma.

On page 45, however, Ulep seems to say that the Supreme Court has ruled on the proper use of the comma.

Also on the same page, I think Ulep should have used too instead of so.

Be that as it may, I think Willard Riano, or his editors at Rex, could very well use Ulep's guidelines in the correct usage of the comma. See here for one example, among many, of Riano's comma usage.