VDML11 — Unclear statements on Business Items and Deliverable Flows

In sub-clause 7.1.9 (Activity), page 20, it says: "A BusinessItem (...) may flow through a delegation to a sub-Collaboration, or be the input or output of a Collaboration." How is the following meant: "be the input or output of a Collaboration" ? Is that only saying in other words what is said with "may flow through a delegation to a sub-Collaboration"? Similar doubt regarding the immediate next sentence: "Flow of BusinessItems into and out of Activities as well as Collaborations is depicted by DeliverableFlows." The phrase of "as well as Collaborations" is a bit arguable. As known, DeliverableFlows do not connect Ports of Collaborations directly.

Revise unclear statements

Unclear statements about Business Items and Deliverable Flows revised.