Unread Articles
---------------

   The following marks mark articles as unread, in one form or other.

`!'
     "Ticked articles" are articles that will remain visible always.  If
     you see an article that you find interesting, or you want to put
     off reading it, or replying to it, until sometime later, you'd
     typically tick it.  However, articles can be expired, so if you
     want to keep an article forever, you'll have to save it.  Ticked
     articles have a `!' (`gnus-ticked-mark') in the first column.

`?'
     A "dormant" article is marked with a `?' (`gnus-dormant-mark'),
     and will only appear in the summary buffer if there are followups
     to it.

`SPACE'
     An "unread" article is marked with a `SPACE' (`gnus-unread-mark').
     These are articles that haven't been read at all yet.