Urs Hoelzle writes:

...a TWAINS will transfer to the given process and run it until some signal or special event occurs. Typically, this would be 'timer expired', 'process yielded', or a SIGIO signal.

We have implemented a (rudimentary) scheduler and some basic facilities like Semaphores and non-blocking I/O (all written in Self).

I take it this means that the new compiler provides signal-handling primitives of some sort? I don't remember this being mentioned at any time.

[Uh oh, here come the bounced messages....]