Submenus

  Some pull-down menus have an associated submenu.
  Submenus work like pull-down menus.  If a pull-down
  menu has a submenu, a submenu icon appears to the right of
  the pull-down menu item.

  To display a submenu, drag the pointer to the submenu icon.
  To choose a submenu item, release MB1 when the rectangle
  is displayed around the correct submenu item.  If you do not
  want to choose a submenu item, drag the pointer back to the
  pull-down menu.