A few months ago, one of our local list owners asked me to create a
special super-list. He told me to create three lists (list1, list2, list3)
with the following configuration:

list1:
   sub-lists= list2,list3

list2:
   sub-lists= list1,list3

list3:
   sub-lists= list1,list2

You can see, that every list is both a sub-list and a super-list of the
other two lists. I thought that this would create some kind of loop and I
was really astonished to see that it worked (on a 1.8d LISTSERV).

Kind regards,

Siegfried