[Help-smalltalk] visualgst - package extensions?

[Paolo Bonzini]

Hi all,

I merged visualgst and that includes the class-package extension system. 
 Like everything that actually affects the source code, I would like to 
see a design document of some kind, showing 2-3 alternative approaches 
and how they stack against each other.

Can you provide something like this?

Thanks,

Paolo