To read a Discussion topic, do one of the following:
Double-click the topic to open it. To close a Discussion topic, click the Close box.
View the topic in the preview area. You can widen or narrow the preview area by dragging the window splitter. Press F8 or SHIFT+F8 to view the next or previous topic in the preview pane.
To change the layout of the reading pane, click the View tab, click Reading Pane, and then click the option you want.