Firefox OS Simulator 1.0 is here

Does anyone know how I can view the html source of what is displayed on screen in the simulator.

I had a live demo [1] of Firefox OS by Tristan Nitot a few months ago as Pas Sage En Seine [2] in Paris, and it was one of the selling point that at any time the user can view the html source of whatever Firefox OS is displaying on the screen (see [1] at 55:00 approximately). This is really awesome because it means that you can always study how things work and easily improve them.

But I can't find how to do that in the simulator.

[1] http://lacantine.ubicast.eu/videos/nitot/

[2] http://www.passageenseine.org/

So native apps are written in HTML, right? Sounds like that would make things so quick and easy.

Slow and ugly...