Alan Lovejoy wrote:
> 
---snip 
> The best place to add your own stuff when you're doing "real work" is in your
> own classes, not in system classes (with some exceptions I'll mention). But
> for just playing around, the issue is not as critical.

Are the 'system classes' all of the classes that ship with a new release
from 
Squeak Central?
---snip 
> --Alan