You can perform the following operations on the selected menu item:
Cut:
Copies the menu item to the clipboard and deletes it from the menu.
Copy:
Copies the menu item to the clipboard.
Paste:
Inserts the menu item copied to the clip board immediately before the selected item.
If the whole menu is selected, the clip board menu item is inserted at the end of the menu.
Delete:
Deletes the selected menu item.
Popup Menu:
Specifies whether the menu being edited is a popup menu.
This option is only enabled when the whole menu is selected - which you can do by clicking in the white space of the Menu Editor window.
If it is checked, the menu is a pop up menu.
If it is not checked, the menu is a menu bar.