@findex gnus-unread-mark
This hook is called whenever an article is selected. It is intended to
be used for marking articles as read. The default value is
-@code{gnus-summary-mark-unread-and-read-as-read}, and will change the
+@code{gnus-summary-mark-read-and-unread-as-read}, and will change the
mark of almost any article you read to @code{gnus-unread-mark}. The
only articles not affected by this function are ticked, dormant, and
expirable articles. If you'd instead like to just have unread articles