SYSE.2:4.1 - Start with one decision-changing use situation

Take the selected actual System or intended System referent and current reason from the project-system choice account, or state the bounded engineering subject when no project-system choice is needed. If that choice is needed but no compatible SYSE.1 account is available for the same subject and decision, use a qualified direct source for the focus claim or record the missing project-focus result and stop only the linked claim it blocks. For an actual System, describe an actual or possible-future situation in which it participates. For a not-yet-present referent, keep the intended participation in modal plan, decision, or description content; do not assert an actual System or participation relation before identity inception. State:

1. the subject that relies on, uses, changes, or is affected by the proposal;
2. the direct relation by which that subject enters the use;
3. the condition or change expected;
4. the outside effect that matters to the current decision; and
5. the uncertainty that could change the concept.

Name the relying subject under its admitted kind; a person and a System are only two possible kinds. State the direct relation by which it enters the use—for example, reliance, participation, performed Work, or affectedness. Include affected Systems or intended System referents whenever their qualified consequence claims can change the decision; participation in or ownership of the designated System is not required.