Q: PL/SQL Stored Procedures for InterOffice's Document

I got a problem with InterOffice 4, on a Oracle7 Server: I must write a flow (with WorkFlow 2.0) that interact heavily with the "Document" implemented in InterOffice; document management features are very poor, in WorkFlow, but PL/SQL stored procedures can be easily invoked.

The question is: "There is a PL/SQL package that implements the same capability as the InterOffice Document? (folder creation, document check-in/out, etc...).

I cannot belive the answer is "No.": the pw.exe actually operate on the database through some procedure, but I have taken a look at the packages stored and I did'nt find anything interesting...

Can anybody help me?
Thanks in advance,

                  Imbra.