Forum OpenACS Q&A: Response to Content Repository: Pros & Cons

No, the CR doesn't provide that service for you.  You'd have to build on top of it.  I think doing so would be easier than starting from scratch, though ...

I'm not sure the CR's really the right level to do this.  It would be nice to have a central service that did, but shoving more and more higher-level functionality into the CR makes it less and less approachable if all you need is the simple stuff.