[development] multiple local task menus

[Dave Cohen]

I'm just getting used to the new (Drupal 6) menu system and there's a lot to 
like about it.  I can't quite figure out how to do one thing, though.  Is 
this possible...

Those familiar with Organic Groups know that when viewing some pages there is 
a notion of a "group context".  So for example if node/42 is in group 6, then 
the group context is 6 when visiting ?q=node/42.  Similarly, the group 
context remains 6 on ?q=node/add/book/parent/42 and ?q=comment/edit/123 (if 
comment 123 is on node 42).

What I'd like to do is create menu items that behave like tabs for the group.  
So whenever the group context is known, the menu items would appear.  
Imagine ?q=node/42 with tabs like ?q=node/42/edit, ?q=node/42/revisions, etc.  
That page would also have another set of "tabs" something 
like ?q=group/6/edit, ?q=group/6/tracker, etc.  And those group-specific tabs 
would also appear on ?q=node/add/book/parent/42 etc, whenever the group 
context is known.

I hope I've explained the question reasonably well.  I've read the menu docs 
on drupal.org and I can't figure a way to do this.  Is it possible?

Thanks, -Dave