Left/Right pull-down menus
 The Left and Right menus allow you to change  the  left  and
 right panels.

                Left -----+          +------- Right
                          .          .
                    +-- Tree --++-- C:\ --+
                    |          ||         |
                    |          ||         |
                    |          ||         |
                    |          ||         |
                    -----------|----------|
                    +----------++---------+
                    C>_

 The next few help screens describe each item in the Left and
 Right menus.