E.18.NET:5.3 - N-ary relation and feedback cycle

A manufacturing release relation has three participants defined by one admitted domain relation pattern: one product-definition position in a TFS selected to answer the development question, one equipment-readiness position in a TFS selected to follow the changes that establish equipment readiness, and one release-condition position in a TFS selected for assurance. Its network row keeps the three participants and their order. It is not replaced by three unlabeled arrows.

Later, an exact use-observation relation connects a position in a TFS selected for operation or use back to a position in a TFS selected to answer the development question. The relation occurrences form a feedback cycle, while the selected direct-member nesting remains acyclic. The feedback does not make the operation-or-use TFS a member of itself and does not turn observation into development Work.