> > Well, the short question is: what are they? I've read Guido's python
> > 3000 status report on
> > http://www.artima.com/weblogs/viewpo...?thread=208549 where he
> > mentions ABC's but don't quite understand what the whole story is
> > about.
> The story is at PEP 3119:
Thanks, I overlooked that somehow.