I wrote up a little document on a capabilities approach to sandboxes in
Squeak.  I did it in a BookMorph just to try it.  People can view it
like this:

	'http://www.cc.gatech.edu/~lex/squeakcaps.morph' asUrl 
		retrieveContents contentStream fileInObjectAndCode openInWorld

It was fun being able to just grab an ellipse and dump it on my page. 
On the other hand, I wouldn't want to repeat this right now for any
document that was longer than this....

Lex