content-loading mechanism questions

>On the second point, we don't use an iframe for menu items since
>iframes tend to be egregiously expensive in terms of memory
>resources. If your app doesn't _really_ need an iframe, you might
>look into the NW content loading mechanism.

I always assumed netWindows used iframes for its content-loading.  May I ask 
what it does use?  Offhand, the alternative loading methods would be XMLHTTP 
(not supported by all target platforms), dynamically appending script tags 
using the DOM, setting cookies (javascript calls for dummy image and sends a 
query string, server sets cookies) or by using a java applet.  Have I missed 
something?

Still on the content-loader, are there any plans to "modularise" it as with 
the signals and slots?

Cheers,

Alan Hill

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