•Newsgroups are organized into
topical hierarchies in which each newsgroup has a unique name
that shows its position and classification in the hierarchy.
•
•Top-level hierarchies are shown
as the first part of a newsgroup’s name and then the
subcategories follow. The
names are separated by periods.
•
•The original Usenet News Service
included eight main top-level categories—including one miscellaneous
category.