On Thu, 1 May 2003, Anthony Adachi wrote:

> So, I gather, from what you're saying, that people
> file out the classes they've created (and the existing
> one's they've modified) out of Squeak and store them
> into their Version Control program on a periodic
> basis? Thus, providing the way to bring back
> individual classes or methods in an image to an
> earlier state (beyond what undo allows- especially
> after quitting and reopening Squeak).
> No?

Right.

For more info on one way this gets done, see:
http://beta4.com/squeak/aubergines/docs/dvs.html