F.2:11.2 - Control and services

• State-space control source, cited passage and scheme — actuation; Plain control output; claim: “A signal applied to influence plant state or output.”
• IEC 61131-3, cited runtime passage and scheme — task; Plain scheduled program execution; claim as above.
• ITIL 4 (2020), incident-management use — incident; Plain reported service disruption; claim: “An unplanned interruption or reduction in service quality.”

This prevents a plant fault from becoming an ITIL incident merely because a writer wants one word for both.