Hi folks,

	What would all of you think of a subclass of SystemNavigation 
restricted
to one or several instances of PackageInfo ? This way, one could use
all the standard methods for browsing the system as well as only some 
of it's
part. So for example if the system browser was only using an instance of
SystemNavigation to show it's content, it would be much easier to create
an instance of it viewing a part of the system only.

I had a small look at SystemNavigation's implementation, and it
seems that a few methods only needs to be overriden
(such as allBehaviorsDo: aBlock and a few more).

What would you think of that ?

Cheers,
	Romain