Messageflow looks to be a subflow (WMB)
In previous version of Websphere Message Broker/IBM Integration Bus, subflows weren’t available so teams would often create message flows that were essentially subflows.
By changing the extension to “subflow” it gives the reader a clearer understanding of the author’s intent went writing the flow.
|For example, the following flow could be a subflow as it. There is a menu option in the WMB/IIB toolkit to convert a message flow into a subflow|