E.10:0.2c.23 - case, scenario, example, pilot, anti-case
Use F.19 to decide whether the text needs several cases, whether each changes recognition or action, and whether an illustrative series could plausibly be mistaken for a complete classification. State the proposition or kind first and mark examples as non-exhaustive when that ambiguity is live.
If the word also carries an exact FPF use, name that use directly—for example a project situation, worked example, pilot, negative control, evidence case, comparison case, or source example—and apply its subject pattern. Do not reproduce this menu in the repaired prose.
A case may illustrate or test a pattern. It becomes evidence, a decision basis, a source basis, or another governed object only through the relation and rule that establish that use, not through the label case itself.