When you select a message from a board index you are taken to a new screen which shows various things.
At the top of the screen you will see the name of the board the message is in (linked to take you back to the Board Index). You may also see the number of times the message thread has been read. Finally you will see a set of icons that allow you to do the following (left to right):

Move to the previous message thread (disabled if this is the first thread).
Move to the Board Index.
Move to the next message thread (disabled if this is the last message on the board).
View the messages in a flat format.
View the messages in a threaded format.

Paul Lomax
Internet Technology Manager
IPC Country and Leisure Media