(Note: I'm working in MACS, so applicability to OACS may vary)
I've used tcllib as well. i wrote a pretty nice parser for the email-handler that puts MIME messages into acs-messages (for e-mail to bboard functionality), which I can pass along if there is desire.
Is there a good way of embedding tcllib into the interpreters? I've had to source Tcllib for every interpreter that would need it.
