Up arrow and down arrow

Gives focus to the next or previous menu item on a menu.

Right arrow

If the menu item that has focus is a submenu, opens the submenu and gives focus to the first menu item on the submenu.

If the menu item that has focus is not a submenu, opens the next menu on the menubar.

Left arrow

If the menu item that has focus is a submenu item, switches the focus back to the submenu.

If the menu item that has focus is not a submenu item, opens the previous menu on the menubar.

Return

Selects the focused menu item and closes the open menus.

Access key

Selects the menu item that is associated with the access key and closes the open menus.

Spacebar

Selects the focused menu item and closes the open menus except when the menu item is a check box or radio button. If the menu item is a check box or radio button, the menu does not close.

Esc

Closes the open menus.