Messages that you haven't read yet will be flagged as
.
When you read a message, the flag
won't immediately disappear. Similarly,
if someone else (or you yourself) post a new message while you're
using the bulletin board, the new message won't immediately show
up on your display. Click on the
button to refresh the display.
Clicking on the button
will mark all listed messages as having been read, without your
having read them. You wouldn't normally want to do that - at least
not in my course!