Cheers
A replacement package with a well definied tcl api called "workflow" is part of OpenACS now.
https://openacs.org/xowiki/acs-workflow
Does this simulation represent the current workflow package:
https://openacs.org/doc/current/simulation/internals.html ???
Ah. Unfortunately the package docs from the the OpenACS intstallation which is too old to have the workflow package on openacs.org.
It is something we need to generally address to make the package docs publically available.
you might find a slide set I wrote for a lecture last year helpful:
http://pumptheory.com/collaboration/open-acs/lectures/openacs-workflow/
also, the original design spec for workflow:
http://www.collaboraid.biz/developer/workflow-spec
Also you can (inconveniently) browse the docs for an up to date workflow package via the cvs browser:
http://cvs.openacs.org/cvs/openacs-4/packages/workflow/www/doc/
eg: the developer docs:
http://cvs.openacs.org/cvs/*checkout*/openacs-4/packages/workflow/www/doc/developer-guide.html