This is very confusing for me.

In one hand, as I understood, standard SqueakVM doesn't have multiple OS threads. The whole VM is run in a single OS thread. This is what it is know as "green thread" ?

On the other hand, hay can use fork inside squeak. What this actually does? like internal threads ? How are they known ? forks ? internal threads?� or just threads?

Thanks to help me understand this (I know this thread should be in squeak-vm mailing list but I am event not subscribed).

Mariano