Horizontal MenuBar and PullDown Menu
A Horizontal MenuBar is a graphical control that allows you to access PullDown Menus or to execute commands.
A Horizontal MenuBar is a list of menu items. The menu item can be either a title of PullDown Menu or a command.
You can select a menu item by clicking the mouse Select button at the menu item or by pressing <ALT + menu item's Access Key> (an underlined character in the menu item name).
A PullDown Menu displays a list of menu items. The menu item can be either a command or the title of a PullDown Menu (SubMenu).

You can select a menu item by clicking the mouse's Select button on the menu item or by pressing menu item's <Access Key> (an underlined character in the menu item name).
If you select a menu item representing a command, the PullDown Menu is closed and the command is executed.
If you select a menu item that is the title of another PullDown Menu, the subsidiary PullDown Menu will be opened.
Note: To close the PullDown Menu without selecting any menu item, press <ESC> or click the mouse Option or Pan Button.