F.13:9.2 - Alias for a common legacy synonym (Sys‑CAL)

Illustrative premise: A local state-space control vocabulary has independently established the same scheme, sense and use for “control output” and “actuation”. This premise requires source-local recovery in a real application; the words alone are insufficient. Relation: aliases("control output" ↔ "actuation"). Effect: Keep the distinct expression-bearing cells and one historical read-path. New text uses the locally selected preferred expression “actuation”.