The commands described here are for moving the point on headers, and then automatically selecting articles.
gnus-Subject-next-unread-article).
gnus-Subject-prev-unread-article).
gnus-Subject-next-article).
gnus-Subject-prev-article).
gnus-Subject-next-same-subject).
gnus-Subject-prev-same-subject).
gnus-Subject-first-unread-article).
gnus-Subject-goto-last-article).
gnus-Subject-goto-article).
If the variable gnus-auto-select-same is non-nil, the
commands n and p (gnus-Subject-next-unread-article
and gnus-Subject-prev-unread-article) move the point to unread
articles with the same subject as the current article like the commands
M-x gnus-Subject-next-unread-same-subject and M-x
gnus-Subject-prev-unread-same-subject, respectively. If you are used
to running `rn -S', set the variable to non-nil.
If the variable gnus-auto-extend-newsgroup is non-nil,
the commands N and P (gnus-Subject-next-article and
gnus-Subject-prev-article) extend visible articles to forward and
backward if possible.
The variable gnus-auto-select-next defines the behavior of GNUS
when there is no unread article in the current newsgroup and a command
selecting the next unread article is executed. If the variable is
non-nil, the next newsgroup containing unread articles is
selected automatically.
See section Common Variables, for more information on customization.