Toolbar questions

Hello

I have a couple of questions regarding the toolbar that is implicitly  
created for interfaces which are using the toolbar-items initarg.

1) Is it possible to get a pointer to this toolbar object, in order to  
use update-toolbar?

2) Is it possible to have dropdown menus from toolbar buttons in this  
toolbar? I can't make it work. The documentation says that "dropdown- 
menu-kind is not supported for toolbar buttons in the interface  
toolbar-items list", but it doesn't say anything about dropdown-menu.

3) It seems that the help-callback for the interface is never called  
when hovering toolbar buttons in the "implicit toolbar".  
Using :tooltip for the buttons works nice, but it is deprecated  
according to the documentation in favour of the help-callback.

Regards
Erik