> >that interface is pretty cool; any chance documentation is coming up?
> 
> The one to fiddle with another LWP's specificdata is not going to be  
> documented, because it is a private API that is not really supposed to  
> be used except in very special circumstances.

Could you please document what those "very special circumstances"
are, then? APIs and interfaces have a nasty habit of getting used,
whether they're meant to be public or not.