[Mailman-Users] Sub-Topics

[zzizzle at zzizzle.com]

Is there a way to "divide" your email group by sub-topics?  I don't 
quite understand the "mail-news gateway" and "content filtering" 
settings and wonder if I can set this up there.  Some of the 
documentation has been helpful but it's a bit confusing because of all 
of the information.

Thanks,
Jonathan