Hi!
This is to have a menu made by images.
I have an idea and make an image of the interface that explain it.
(The red dots shows whats new)
http://www.alebenson.com.ar/wp-content/uploads/alebenson-image-menu.jpg
Notice that you can add a custom image URL or look it up in the Media Library.
When image option is present, the generated code will add an < img > tag between the < a >, instead of the Navigation Label, and the label will be used as an image ALT.