> In 3.9, open OBSystemBrowser, context menu for a class, open environment -> 
> package (or class, ...)
> 
> It is a browser (I believe Lukas wrote) that offers re-factoring that is 
> scoped to package / class / hierarchy / etc. (rather than entire image). 
> Very handy for me, I am about to add similarly scoped #senders and 
> #implementors.

I guess this is indeed the OB refactoring browser Lukas did.
You can find updates for it in Colin's Monticello repo at 
http://source.wiresong.ca/ob and there in the package 'OB-Refactory'.

David