Originally Posted by Stefan Blom

I would set this up as follows, with all the numbers in the right-aligned in the left margin. (In my example, I am only using the first three levels, but the principle would of course be the same for a "complete" nine-level list.)

If you want each list level to also be indented from the left, it would require more fiddling. As far as I know, you can't get numbers to align on punctuation, only on the number symbol itself.