nested ordered lists?

Hi,

I'm trying to use Anolis/pimpmyspec.net to produce a w3c Note, and am curious
as to how to have nested ordered lists such that I can have output like so..

1. item one
2. item two
   2.1 item two dot one
3. item three
   3.1  item three dot one
4. item four


...or like so..

1 item one
2. item two
   a. item two.a
3. item three


If it is possible, what might the source .html markup look like?

thanks,

=JeffH