How do Corticon products map to Tibco (iProcess) products?

I've heard that Tibco OEMs Corticon products, but it's not clear to me how the two product lines relate. Can someone elaborate on how Corticon products map to Tibco (iProcess) products?

Corticon BRMS and iProcess Decisions clarified

TIBCO iProcess Decisions is an OEM version of a portion of the Corticon Business Rules Management System (BRMS) product suite, restricted to use with TIBCO BPM.  More specifically, iProcess Decisions includes Corticon Studio and Corticon Server, but not Corticon Enterprise Data Connector (EDC), Corticon Collaborator (repository and lifecycle management), or Corticon Dialogs (smart forms / web UI).  Also, iProcess Decision rulesets are restricted to only support calls from the TIBCO iProcess engine.  iProcess Decisions provides rule modeling and rule execution (rule engine) capabilities that greatly enhance the TIBCO BPMS (Business Process Management System).  However, customers seeking an enterprise rules engine (or enterprise BRMS) must engage with Corticon to obtain unrestricted use of Corticon Server, as well as the value-add products in Corticon’s BRMS product suite.

Corticon BRMS and iProcess Decisions clarified

Tibco iprocess decisions can exposed rules in the form of webservices hence can get call from other tibco tools as well..
I did it with Tibco BW.

Thanks
Peeyush

 Even though it is possible

 Even though it is possible to call iProcess Decision Services from other aspects of Tibco (e.g. BW), the default license only allows invocation of Decision Services from the Tibco BPM tool.  To be able to call Decision Services from anywhere in the Tibco stack, you need obtain a full license.