samjam: there you go. Please update and rebuild your entire tree
(libcitadel, citadel, and webcit) in order to get all the changes -- since
I made an API change you're going to need to refresh everything.
Both the OPNA and DLAT commands now accept either a part number or a
content-id. (DLAT is better than OPNA if you are writing new code.)
This *probably* means that webcit's "/mimepart/...." URL syntax will work
with either a part number or content-id as well, but I haven't tested
that. I don't see why it wouldn't work, since the mimepart() command
which it calls uses OPNA to grab the requested part.
Give it a try and let us know how it goes.