### hierarchies
"alt       (alternative)" alt.*
"americast (USA Today feed)" americast.*
"bionet    (biology related)" bionet.*
"bit       (BITNET)" bit.*
"biz       (business)" biz.*
"clari     (Clarinet: UPI newswire)" clari.*
"comp      (computer)" comp.*
"ddn       (Defense Data Network (US military news))" ddn.*
"dec       (DEC-related postings)" dec.*
"de        (Germany regional)" de.*
"fj        (From Japan)" fj.*
"gnu       (GNU project software and discussion)" gnu.*
"k12       (Kindergarten--12th grade education)" k12.*
"misc      (miscellaneous)" misc.*
"ncar      (Weather)" ncar.*
"news      (USENET maintenance and discussion)" news.*
"rec       (recreational)" rec.*
"sci       (science)" sci.*
"soc       (misc. topics, social issues)" soc.*
"talk      (misc. topics, often controversial ones)" talk.*
"trial     (popularity trials for new groups)" trial.*
"u3b       (for u3b computer systems?)" u3b.*
"unm       (University of New Mexico local newsgroups)" unm.*
"vmsnet    (VMS topics)" vmsnet.*
