Pass 2

[Doug Lea]

> Some more suggestions/corrections:

Thanks! Hopefully the revisions are OK. 

Except, Andrei: there's a stray quote left in '."structures'

> Section 5:
> 
> I'm not at all sure we want to go here. 

I'm not so sure either. Or at least not sure these should be
integrated here in the same proposal. But it is much better at this
point to later say we changed our minds than to drop it now.

-Doug