By default, the Discussion Messages screen lists unread messages. To view both read and unread messages, click Show All . By default, messages are presented by threads.
Threaded messages are a series of replies to the same subject.
To expand or collapse a thread, click the arrow next to the Subject . To view messages in chronological order, click Unthreaded . From the Discussions table, click the topic containing the messages you want to read. To view all of the messages posted to Discussions , click All . The Discussion Messages screen appears.