[Trinidad] which component for a dropdown menu

[Renzo Tomaselli]

Hi - perhaps a trivial question - which Trinidad component can be used 
for a stardard multilevel menu (horz bar + dropdown) ?
I know that MenuModel is used almost everywhere for dynamic contents - I 
used it succesfully for tree and navigationPane. I guess that the latter 
might be a menu (as bar ? as buttons ?) but can it be dropdown ? With 
further levels ?
There is no such kind of menu in the example set. Some appear in the Adf 
documentation, but component renaming/replacement makes it hard to 
guess. Even more, the Trinidad developers pages refers to navigation by 
means of a NavigationLevel component, which seems unexisting.
Thanks for any hint -- Renzo