Most people who don't have all day to read news will want to enter a newsgroup by way of the thread selector. A thread may contain multiple subjects if the subject changes as the discussion continues. Also displayed is a count of the number of unread articles in each thread. Each thread is preceded by a letter or number that can be typed to select it. SP Perform the default command.
TAB Begin reading the selected threads.
If none are selected, read everything. Mark the current thread as killed. Go to first page. J Mark all selected articles as read. Scan all articles for a subject containing pattern and select its thread.