radio menu item

[Matt Hillebrand <hill9361 uidaho edu>]

I found examples of some radio menu items in the code for testgtk, but I
can't find those functions in the API!!!!! Functions like:

gtk_radio_menu_item_group()
gtk_radio_menu_item_new_with_label()

What's worse is that the code in testgtk doesn't make a whole lot of
sense. Where can I learn more about radio menu items?

Thanks,

Matt