I'm still trying to digest this, but it seem pretty clear the 'confinement' is the "clear scope" thing I was asking about on es-discuss. According to that discussion, this means needs to fit with the 'modules' thing on ecmascript. That seems to be where you are headed, but basing a new proposal on another new proposal is ... well I'll let you fill in the blank depending on how you are feeling.
I guess the actual implementation of confined script evaluation would not be difficult (Firefox can do it now if you can get some one to explain it). Getting the entire 'modules' effort out? I'm thinking that could be hard. jjb
