Re: ISSUE-66: should Documents that aren\'t being presented be required to have a null defaultView?

> To summarize options:
> 
> 1) Require any non-presented DocumentWindow to have a null defaultView.
> 2) Allow a non-presented DocumentWindow to have any AbstractView or null 
> as the defaultView (essentially, we disclaim stating a requirement on 
> non-presented documents).
> 3) Forbid any non-presented Document to implement DocumentWindow (seems 
> too restrictive).

I think I like 2 best. Ideally the XHR spec should define what 
properties the Document it returns should have.

I'd be ok with 1 as well, though it might be tricky to define "presented".

/ Jonas