[Design] Multiple window support

[Jeffrey Harris]

Starting my slow progress through old threads...

> On Jun 12, 2006, at 7:27 AM, John Anderson wrote:
> 
>> It should be pretty easy to try out -- and see what problems might
>> arise.

I believe it's not hard to experiment with multiple windows, but
presumably moving from proof of concept to polished-and-tested is an
order of magnitude more difficult.  I'm reluctant to move far down that
path given our drive to cut down on features unless the PPD team feels
multiple windows will add a *lot* to the user experience.

Sincerely,
Jeffrey