Newsgroups File Format
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   The newsgroups file lists groups along with their descriptions.  Not
all groups on the server have to be listed,  and not all groups in the
file have to exist on the server.  The file is meant purely as
information to the user.

   The format is quite simple; a group name, a tab, and the description.
Here's the definition:

     newsgroups    = *line
     line          = group tab description <NEWLINE>
     group         = <non-white-space string>
     tab           = <TAB>
     description   = <string>