As far as I can tell, you can create a superlist that contains as sublists 2 or more lists that already exist on your server. But what do you have to do if you want to sublists WITHIN an existing list. For example, I own MYLIST-L. I'd like to have a sublist, perhaps called MYSUBLIST-L, that can be used by a subset of the current subscribers to MYLIST-L. Do I have to go thru the normal process of getting a new list created on my institution's server, & then make it a sublist of MYLIST-L? Or is there a way I can create the sublist from with MYLIST-L. What will happen if I set MYLIST-L's "Sub-list" keyword to "Sub-lists=MYSUBLIST-L?" Thanks, Pat