[andreas.sikkema@xxxxxxxxxxx]

> Of course, you can create a subtree
> off of a proto_item that *does* have a value. That's how every dissector
> starts, since proto_item representing the protocol itself is
> a filterable value. Using a filterable proto_item as the branch-point
> for a subtree is also useful for bitfields (see packet-tr.c).

Thanks, it's all very logical, but unless you know a dissector that uses it, you're in the dark ;-)

-- 
Andreas Sikkema
andreas.sikkema@xxxxxxxxxxx
"Standing barefoot in a river of clues, most people would 
         not get their toes wet." - Brian Kantor in a.s.r.